Talos Rules 2026-04-28
This release adds and modifies rules in several categories.

Talos has added and modified multiple rules in the file-other, file-pdf, malware-cnc and server-webapp rule sets to provide coverage for emerging threats from these technologies.

For information about Snort Subscriber Rulesets available for purchase, please visit the Snort product page.

Change logs

29200

2026-04-28 13:29:20 UTC

Snort Subscriber Rules Update

Date: 2026-04-28

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 2092000.

The format of the file is:

gid:sid <-> Default rule state <-> Message (rule group)

New Rules:


 * 1:66381 <-> DISABLED <-> SERVER-WEBAPP Fortinet FortiClientEMS authentication bypass attempt (server-webapp.rules)
 * 1:66382 <-> DISABLED <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt (malware-cnc.rules)
 * 1:66383 <-> DISABLED <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt (malware-cnc.rules)
 * 1:66384 <-> DISABLED <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt (malware-cnc.rules)
 * 1:66385 <-> DISABLED <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt (malware-cnc.rules)
 * 1:66386 <-> DISABLED <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt (malware-cnc.rules)
 * 1:66387 <-> DISABLED <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt (malware-cnc.rules)
 * 1:66388 <-> ENABLED <-> FILE-PDF Adobe Acrobat Reader arbitrary code execution attempt (file-pdf.rules)
 * 1:66389 <-> ENABLED <-> FILE-PDF Adobe Acrobat Reader arbitrary code execution attempt (file-pdf.rules)
 * 1:66390 <-> DISABLED <-> FILE-OTHER Unitronics VisiLogic OPLC IDE long vlp filename buffer overflow attempt (file-other.rules)
 * 1:66391 <-> DISABLED <-> FILE-OTHER Unitronics VisiLogic OPLC IDE long vlp filename buffer overflow attempt (file-other.rules)
 * 1:66392 <-> DISABLED <-> FILE-OTHER Apple OSX Finder DMG volume name memory corruption attempt (file-other.rules)
 * 1:66393 <-> DISABLED <-> FILE-OTHER Apple OSX Finder DMG volume name memory corruption attempt (file-other.rules)
 * 1:66394 <-> DISABLED <-> FILE-OTHER ScadaTEC multiple products long filename buffer overflow attempt (file-other.rules)
 * 1:66395 <-> DISABLED <-> FILE-OTHER ScadaTEC multiple products long filename buffer overflow attempt (file-other.rules)
 * 1:66396 <-> DISABLED <-> MALWARE-OTHER Win.Trojan.Fast16 download attempt (malware-other.rules)
 * 1:66397 <-> DISABLED <-> MALWARE-OTHER Win.Trojan.Fast16 download attempt (malware-other.rules)

Modified Rules:


 * 1:59016 <-> DISABLED <-> SERVER-WEBAPP Hewlett Packard Enterprise Intelligent Management Center Java expression language injection attempt (server-webapp.rules)

29181

2026-04-28 13:29:20 UTC

Snort Subscriber Rules Update

Date: 2026-04-28

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 2091801.

The format of the file is:

gid:sid <-> Default rule state <-> Message (rule group)

New Rules:


 * 1:66381 <-> DISABLED <-> SERVER-WEBAPP Fortinet FortiClientEMS authentication bypass attempt (server-webapp.rules)
 * 1:66393 <-> DISABLED <-> FILE-OTHER Apple OSX Finder DMG volume name memory corruption attempt (file-other.rules)
 * 1:66392 <-> DISABLED <-> FILE-OTHER Apple OSX Finder DMG volume name memory corruption attempt (file-other.rules)
 * 1:66391 <-> DISABLED <-> FILE-OTHER Unitronics VisiLogic OPLC IDE long vlp filename buffer overflow attempt (file-other.rules)
 * 1:66397 <-> DISABLED <-> MALWARE-OTHER Win.Trojan.Fast16 download attempt (malware-other.rules)
 * 1:66382 <-> DISABLED <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt (malware-cnc.rules)
 * 1:66383 <-> DISABLED <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt (malware-cnc.rules)
 * 1:66384 <-> DISABLED <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt (malware-cnc.rules)
 * 1:66385 <-> DISABLED <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt (malware-cnc.rules)
 * 1:66386 <-> DISABLED <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt (malware-cnc.rules)
 * 1:66387 <-> DISABLED <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt (malware-cnc.rules)
 * 1:66388 <-> ENABLED <-> FILE-PDF Adobe Acrobat Reader arbitrary code execution attempt (file-pdf.rules)
 * 1:66389 <-> ENABLED <-> FILE-PDF Adobe Acrobat Reader arbitrary code execution attempt (file-pdf.rules)
 * 1:66390 <-> DISABLED <-> FILE-OTHER Unitronics VisiLogic OPLC IDE long vlp filename buffer overflow attempt (file-other.rules)
 * 1:66395 <-> DISABLED <-> FILE-OTHER ScadaTEC multiple products long filename buffer overflow attempt (file-other.rules)
 * 1:66394 <-> DISABLED <-> FILE-OTHER ScadaTEC multiple products long filename buffer overflow attempt (file-other.rules)
 * 1:66396 <-> DISABLED <-> MALWARE-OTHER Win.Trojan.Fast16 download attempt (malware-other.rules)

Modified Rules:


 * 1:59016 <-> DISABLED <-> SERVER-WEBAPP Hewlett Packard Enterprise Intelligent Management Center Java expression language injection attempt (server-webapp.rules)

29171

2026-04-28 13:29:20 UTC

Snort Subscriber Rules Update

Date: 2026-04-28

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 2091701.

The format of the file is:

gid:sid <-> Default rule state <-> Message (rule group)

New Rules:


 * 1:66392 <-> DISABLED <-> FILE-OTHER Apple OSX Finder DMG volume name memory corruption attempt (file-other.rules)
 * 1:66395 <-> DISABLED <-> FILE-OTHER ScadaTEC multiple products long filename buffer overflow attempt (file-other.rules)
 * 1:66397 <-> DISABLED <-> MALWARE-OTHER Win.Trojan.Fast16 download attempt (malware-other.rules)
 * 1:66396 <-> DISABLED <-> MALWARE-OTHER Win.Trojan.Fast16 download attempt (malware-other.rules)
 * 1:66382 <-> DISABLED <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt (malware-cnc.rules)
 * 1:66393 <-> DISABLED <-> FILE-OTHER Apple OSX Finder DMG volume name memory corruption attempt (file-other.rules)
 * 1:66381 <-> DISABLED <-> SERVER-WEBAPP Fortinet FortiClientEMS authentication bypass attempt (server-webapp.rules)
 * 1:66394 <-> DISABLED <-> FILE-OTHER ScadaTEC multiple products long filename buffer overflow attempt (file-other.rules)
 * 1:66390 <-> DISABLED <-> FILE-OTHER Unitronics VisiLogic OPLC IDE long vlp filename buffer overflow attempt (file-other.rules)
 * 1:66391 <-> DISABLED <-> FILE-OTHER Unitronics VisiLogic OPLC IDE long vlp filename buffer overflow attempt (file-other.rules)
 * 1:66384 <-> DISABLED <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt (malware-cnc.rules)
 * 1:66383 <-> DISABLED <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt (malware-cnc.rules)
 * 1:66386 <-> DISABLED <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt (malware-cnc.rules)
 * 1:66385 <-> DISABLED <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt (malware-cnc.rules)
 * 1:66388 <-> ENABLED <-> FILE-PDF Adobe Acrobat Reader arbitrary code execution attempt (file-pdf.rules)
 * 1:66387 <-> DISABLED <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt (malware-cnc.rules)
 * 1:66389 <-> ENABLED <-> FILE-PDF Adobe Acrobat Reader arbitrary code execution attempt (file-pdf.rules)

Modified Rules:


 * 1:59016 <-> DISABLED <-> SERVER-WEBAPP Hewlett Packard Enterprise Intelligent Management Center Java expression language injection attempt (server-webapp.rules)

3200

2026-04-28 13:35:16 UTC

Snort Subscriber Rules Update

Date: 2026-04-27-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.2.0.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:301485 <-> FILE-PDF Adobe Acrobat Reader arbitrary code execution attempt
* 1:301486 <-> POLICY-OTHER Marimo terminal WebSocket endpoint access attempt
* 1:301487 <-> FILE-OTHER Unitronics VisiLogic OPLC IDE long vlp filename buffer overflow attempt
* 1:301488 <-> FILE-OTHER Apple OSX Finder DMG volume name memory corruption attempt
* 1:301489 <-> FILE-OTHER ScadaTEC multiple products long filename buffer overflow attempt
* 1:301490 <-> MALWARE-OTHER Win.Trojan.Fast16 download attempt
* 1:66381 <-> SERVER-WEBAPP Fortinet FortiClientEMS authentication bypass attempt
* 1:66382 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66383 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66384 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66385 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66386 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66387 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt

Modified Rules:

* 1:59016 <-> SERVER-WEBAPP Hewlett Packard Enterprise Intelligent Management Center Java expression language injection attempt

3351

2026-04-28 13:35:16 UTC

Snort Subscriber Rules Update

Date: 2026-04-27-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.3.5.1.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:301485 <-> FILE-PDF Adobe Acrobat Reader arbitrary code execution attempt
* 1:301486 <-> POLICY-OTHER Marimo terminal WebSocket endpoint access attempt
* 1:301487 <-> FILE-OTHER Unitronics VisiLogic OPLC IDE long vlp filename buffer overflow attempt
* 1:301488 <-> FILE-OTHER Apple OSX Finder DMG volume name memory corruption attempt
* 1:301489 <-> FILE-OTHER ScadaTEC multiple products long filename buffer overflow attempt
* 1:301490 <-> MALWARE-OTHER Win.Trojan.Fast16 download attempt
* 1:66381 <-> SERVER-WEBAPP Fortinet FortiClientEMS authentication bypass attempt
* 1:66382 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66383 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66384 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66385 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66386 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66387 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt

Modified Rules:

* 1:59016 <-> SERVER-WEBAPP Hewlett Packard Enterprise Intelligent Management Center Java expression language injection attempt

3360

2026-04-28 13:35:16 UTC

Snort Subscriber Rules Update

Date: 2026-04-27-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.3.6.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:301485 <-> FILE-PDF Adobe Acrobat Reader arbitrary code execution attempt
* 1:301486 <-> POLICY-OTHER Marimo terminal WebSocket endpoint access attempt
* 1:301487 <-> FILE-OTHER Unitronics VisiLogic OPLC IDE long vlp filename buffer overflow attempt
* 1:301488 <-> FILE-OTHER Apple OSX Finder DMG volume name memory corruption attempt
* 1:301489 <-> FILE-OTHER ScadaTEC multiple products long filename buffer overflow attempt
* 1:301490 <-> MALWARE-OTHER Win.Trojan.Fast16 download attempt
* 1:66381 <-> SERVER-WEBAPP Fortinet FortiClientEMS authentication bypass attempt
* 1:66382 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66383 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66384 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66385 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66386 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66387 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt

Modified Rules:

* 1:59016 <-> SERVER-WEBAPP Hewlett Packard Enterprise Intelligent Management Center Java expression language injection attempt

3370

2026-04-28 13:35:16 UTC

Snort Subscriber Rules Update

Date: 2026-04-27-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.3.7.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:301485 <-> FILE-PDF Adobe Acrobat Reader arbitrary code execution attempt
* 1:301486 <-> POLICY-OTHER Marimo terminal WebSocket endpoint access attempt
* 1:301487 <-> FILE-OTHER Unitronics VisiLogic OPLC IDE long vlp filename buffer overflow attempt
* 1:301488 <-> FILE-OTHER Apple OSX Finder DMG volume name memory corruption attempt
* 1:301489 <-> FILE-OTHER ScadaTEC multiple products long filename buffer overflow attempt
* 1:301490 <-> MALWARE-OTHER Win.Trojan.Fast16 download attempt
* 1:66381 <-> SERVER-WEBAPP Fortinet FortiClientEMS authentication bypass attempt
* 1:66382 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66383 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66384 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66385 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66386 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66387 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt

Modified Rules:

* 1:59016 <-> SERVER-WEBAPP Hewlett Packard Enterprise Intelligent Management Center Java expression language injection attempt

3700

2026-04-28 13:35:16 UTC

Snort Subscriber Rules Update

Date: 2026-04-27-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.7.0.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:301485 <-> FILE-PDF Adobe Acrobat Reader arbitrary code execution attempt
* 1:301486 <-> POLICY-OTHER Marimo terminal WebSocket endpoint access attempt
* 1:301487 <-> FILE-OTHER Unitronics VisiLogic OPLC IDE long vlp filename buffer overflow attempt
* 1:301488 <-> FILE-OTHER Apple OSX Finder DMG volume name memory corruption attempt
* 1:301489 <-> FILE-OTHER ScadaTEC multiple products long filename buffer overflow attempt
* 1:301490 <-> MALWARE-OTHER Win.Trojan.Fast16 download attempt
* 1:66381 <-> SERVER-WEBAPP Fortinet FortiClientEMS authentication bypass attempt
* 1:66382 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66383 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66384 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66385 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66386 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66387 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt

Modified Rules:

* 1:59016 <-> SERVER-WEBAPP Hewlett Packard Enterprise Intelligent Management Center Java expression language injection attempt

3900

2026-04-28 13:35:16 UTC

Snort Subscriber Rules Update

Date: 2026-04-27-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.9.0.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:301485 <-> FILE-PDF Adobe Acrobat Reader arbitrary code execution attempt
* 1:301486 <-> POLICY-OTHER Marimo terminal WebSocket endpoint access attempt
* 1:301487 <-> FILE-OTHER Unitronics VisiLogic OPLC IDE long vlp filename buffer overflow attempt
* 1:301488 <-> FILE-OTHER Apple OSX Finder DMG volume name memory corruption attempt
* 1:301489 <-> FILE-OTHER ScadaTEC multiple products long filename buffer overflow attempt
* 1:301490 <-> MALWARE-OTHER Win.Trojan.Fast16 download attempt
* 1:66381 <-> SERVER-WEBAPP Fortinet FortiClientEMS authentication bypass attempt
* 1:66382 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66383 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66384 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66385 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66386 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66387 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt

Modified Rules:

* 1:59016 <-> SERVER-WEBAPP Hewlett Packard Enterprise Intelligent Management Center Java expression language injection attempt

31110

2026-04-28 13:35:16 UTC

Snort Subscriber Rules Update

Date: 2026-04-27-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.1.11.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:301485 <-> FILE-PDF Adobe Acrobat Reader arbitrary code execution attempt
* 1:301486 <-> POLICY-OTHER Marimo terminal WebSocket endpoint access attempt
* 1:301487 <-> FILE-OTHER Unitronics VisiLogic OPLC IDE long vlp filename buffer overflow attempt
* 1:301488 <-> FILE-OTHER Apple OSX Finder DMG volume name memory corruption attempt
* 1:301489 <-> FILE-OTHER ScadaTEC multiple products long filename buffer overflow attempt
* 1:301490 <-> MALWARE-OTHER Win.Trojan.Fast16 download attempt
* 1:66381 <-> SERVER-WEBAPP Fortinet FortiClientEMS authentication bypass attempt
* 1:66382 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66383 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66384 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66385 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66386 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66387 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt

Modified Rules:

* 1:59016 <-> SERVER-WEBAPP Hewlett Packard Enterprise Intelligent Management Center Java expression language injection attempt

31150

2026-04-28 13:35:16 UTC

Snort Subscriber Rules Update

Date: 2026-04-27-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.1.15.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:301485 <-> FILE-PDF Adobe Acrobat Reader arbitrary code execution attempt
* 1:301486 <-> POLICY-OTHER Marimo terminal WebSocket endpoint access attempt
* 1:301487 <-> FILE-OTHER Unitronics VisiLogic OPLC IDE long vlp filename buffer overflow attempt
* 1:301488 <-> FILE-OTHER Apple OSX Finder DMG volume name memory corruption attempt
* 1:301489 <-> FILE-OTHER ScadaTEC multiple products long filename buffer overflow attempt
* 1:301490 <-> MALWARE-OTHER Win.Trojan.Fast16 download attempt
* 1:66381 <-> SERVER-WEBAPP Fortinet FortiClientEMS authentication bypass attempt
* 1:66382 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66383 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66384 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66385 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66386 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66387 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt

Modified Rules:

* 1:59016 <-> SERVER-WEBAPP Hewlett Packard Enterprise Intelligent Management Center Java expression language injection attempt

31180

2026-04-28 13:35:16 UTC

Snort Subscriber Rules Update

Date: 2026-04-27-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.1.18.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:301485 <-> FILE-PDF Adobe Acrobat Reader arbitrary code execution attempt
* 1:301486 <-> POLICY-OTHER Marimo terminal WebSocket endpoint access attempt
* 1:301487 <-> FILE-OTHER Unitronics VisiLogic OPLC IDE long vlp filename buffer overflow attempt
* 1:301488 <-> FILE-OTHER Apple OSX Finder DMG volume name memory corruption attempt
* 1:301489 <-> FILE-OTHER ScadaTEC multiple products long filename buffer overflow attempt
* 1:301490 <-> MALWARE-OTHER Win.Trojan.Fast16 download attempt
* 1:66381 <-> SERVER-WEBAPP Fortinet FortiClientEMS authentication bypass attempt
* 1:66382 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66383 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66384 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66385 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66386 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66387 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt

Modified Rules:

* 1:59016 <-> SERVER-WEBAPP Hewlett Packard Enterprise Intelligent Management Center Java expression language injection attempt

31200

2026-04-28 13:35:16 UTC

Snort Subscriber Rules Update

Date: 2026-04-27-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.12.0.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:301485 <-> FILE-PDF Adobe Acrobat Reader arbitrary code execution attempt
* 1:301486 <-> POLICY-OTHER Marimo terminal WebSocket endpoint access attempt
* 1:301487 <-> FILE-OTHER Unitronics VisiLogic OPLC IDE long vlp filename buffer overflow attempt
* 1:301488 <-> FILE-OTHER Apple OSX Finder DMG volume name memory corruption attempt
* 1:301489 <-> FILE-OTHER ScadaTEC multiple products long filename buffer overflow attempt
* 1:301490 <-> MALWARE-OTHER Win.Trojan.Fast16 download attempt
* 1:66381 <-> SERVER-WEBAPP Fortinet FortiClientEMS authentication bypass attempt
* 1:66382 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66383 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66384 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66385 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66386 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66387 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt

Modified Rules:

* 1:59016 <-> SERVER-WEBAPP Hewlett Packard Enterprise Intelligent Management Center Java expression language injection attempt

31210

2026-04-28 13:35:16 UTC

Snort Subscriber Rules Update

Date: 2026-04-27-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.1.21.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:301485 <-> FILE-PDF Adobe Acrobat Reader arbitrary code execution attempt
* 1:301486 <-> POLICY-OTHER Marimo terminal WebSocket endpoint access attempt
* 1:301487 <-> FILE-OTHER Unitronics VisiLogic OPLC IDE long vlp filename buffer overflow attempt
* 1:301488 <-> FILE-OTHER Apple OSX Finder DMG volume name memory corruption attempt
* 1:301489 <-> FILE-OTHER ScadaTEC multiple products long filename buffer overflow attempt
* 1:301490 <-> MALWARE-OTHER Win.Trojan.Fast16 download attempt
* 1:66381 <-> SERVER-WEBAPP Fortinet FortiClientEMS authentication bypass attempt
* 1:66382 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66383 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66384 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66385 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66386 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66387 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt

Modified Rules:

* 1:59016 <-> SERVER-WEBAPP Hewlett Packard Enterprise Intelligent Management Center Java expression language injection attempt

31350

2026-04-28 13:35:16 UTC

Snort Subscriber Rules Update

Date: 2026-04-27-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.1.35.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:301485 <-> FILE-PDF Adobe Acrobat Reader arbitrary code execution attempt
* 1:301486 <-> POLICY-OTHER Marimo terminal WebSocket endpoint access attempt
* 1:301487 <-> FILE-OTHER Unitronics VisiLogic OPLC IDE long vlp filename buffer overflow attempt
* 1:301488 <-> FILE-OTHER Apple OSX Finder DMG volume name memory corruption attempt
* 1:301489 <-> FILE-OTHER ScadaTEC multiple products long filename buffer overflow attempt
* 1:301490 <-> MALWARE-OTHER Win.Trojan.Fast16 download attempt
* 1:66381 <-> SERVER-WEBAPP Fortinet FortiClientEMS authentication bypass attempt
* 1:66382 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66383 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66384 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66385 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66386 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66387 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt

Modified Rules:

* 1:59016 <-> SERVER-WEBAPP Hewlett Packard Enterprise Intelligent Management Center Java expression language injection attempt

31440

2026-04-28 13:35:16 UTC

Snort Subscriber Rules Update

Date: 2026-04-27-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.1.44.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:301485 <-> FILE-PDF Adobe Acrobat Reader arbitrary code execution attempt
* 1:301486 <-> POLICY-OTHER Marimo terminal WebSocket endpoint access attempt
* 1:301487 <-> FILE-OTHER Unitronics VisiLogic OPLC IDE long vlp filename buffer overflow attempt
* 1:301488 <-> FILE-OTHER Apple OSX Finder DMG volume name memory corruption attempt
* 1:301489 <-> FILE-OTHER ScadaTEC multiple products long filename buffer overflow attempt
* 1:301490 <-> MALWARE-OTHER Win.Trojan.Fast16 download attempt
* 1:66381 <-> SERVER-WEBAPP Fortinet FortiClientEMS authentication bypass attempt
* 1:66382 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66383 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66384 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66385 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66386 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66387 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt

Modified Rules:

* 1:59016 <-> SERVER-WEBAPP Hewlett Packard Enterprise Intelligent Management Center Java expression language injection attempt

31470

2026-04-28 13:35:16 UTC

Snort Subscriber Rules Update

Date: 2026-04-27-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.1.47.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:301485 <-> FILE-PDF Adobe Acrobat Reader arbitrary code execution attempt
* 1:301486 <-> POLICY-OTHER Marimo terminal WebSocket endpoint access attempt
* 1:301487 <-> FILE-OTHER Unitronics VisiLogic OPLC IDE long vlp filename buffer overflow attempt
* 1:301488 <-> FILE-OTHER Apple OSX Finder DMG volume name memory corruption attempt
* 1:301489 <-> FILE-OTHER ScadaTEC multiple products long filename buffer overflow attempt
* 1:301490 <-> MALWARE-OTHER Win.Trojan.Fast16 download attempt
* 1:66381 <-> SERVER-WEBAPP Fortinet FortiClientEMS authentication bypass attempt
* 1:66382 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66383 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66384 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66385 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66386 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66387 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt

Modified Rules:

* 1:59016 <-> SERVER-WEBAPP Hewlett Packard Enterprise Intelligent Management Center Java expression language injection attempt

31100

2026-04-28 13:35:16 UTC

Snort Subscriber Rules Update

Date: 2026-04-27-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.11.0.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:301485 <-> FILE-PDF Adobe Acrobat Reader arbitrary code execution attempt
* 1:301486 <-> POLICY-OTHER Marimo terminal WebSocket endpoint access attempt
* 1:301487 <-> FILE-OTHER Unitronics VisiLogic OPLC IDE long vlp filename buffer overflow attempt
* 1:301488 <-> FILE-OTHER Apple OSX Finder DMG volume name memory corruption attempt
* 1:301489 <-> FILE-OTHER ScadaTEC multiple products long filename buffer overflow attempt
* 1:301490 <-> MALWARE-OTHER Win.Trojan.Fast16 download attempt
* 1:66381 <-> SERVER-WEBAPP Fortinet FortiClientEMS authentication bypass attempt
* 1:66382 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66383 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66384 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66385 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66386 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66387 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt

Modified Rules:

* 1:59016 <-> SERVER-WEBAPP Hewlett Packard Enterprise Intelligent Management Center Java expression language injection attempt

31200

2026-04-28 13:35:16 UTC

Snort Subscriber Rules Update

Date: 2026-04-27-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.12.0.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:301485 <-> FILE-PDF Adobe Acrobat Reader arbitrary code execution attempt
* 1:301486 <-> POLICY-OTHER Marimo terminal WebSocket endpoint access attempt
* 1:301487 <-> FILE-OTHER Unitronics VisiLogic OPLC IDE long vlp filename buffer overflow attempt
* 1:301488 <-> FILE-OTHER Apple OSX Finder DMG volume name memory corruption attempt
* 1:301489 <-> FILE-OTHER ScadaTEC multiple products long filename buffer overflow attempt
* 1:301490 <-> MALWARE-OTHER Win.Trojan.Fast16 download attempt
* 1:66381 <-> SERVER-WEBAPP Fortinet FortiClientEMS authentication bypass attempt
* 1:66382 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66383 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66384 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66385 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66386 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt
* 1:66387 <-> MALWARE-CNC Pdf.Exploit.Agent variant outbound connection attempt

Modified Rules:

* 1:59016 <-> SERVER-WEBAPP Hewlett Packard Enterprise Intelligent Management Center Java expression language injection attempt