Talos Rules 2025-12-04
This release adds and modifies rules in several categories.

Talos is releasing immediate protection for CVE-2025-55182, a critical React Server components remote code execution vulnerability. This exploits a flaw when decoding payloads within React Server Function endpoints where an attacker can send a malicious HTTP request which translates into a function call.

Talos has added and modified multiple rules in the 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

2025-12-04 22:34:54 UTC

Snort Subscriber Rules Update

Date: 2025-12-04

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:


 * 1:65554 <-> ENABLED <-> SERVER-WEBAPP React Server Components remote code execution attempt (server-webapp.rules)

Modified Rules:

29190

2025-12-04 22:34:54 UTC

Snort Subscriber Rules Update

Date: 2025-12-04

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 2091900.

The format of the file is:

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

New Rules:


 * 1:65554 <-> ENABLED <-> SERVER-WEBAPP React Server Components remote code execution attempt (server-webapp.rules)

Modified Rules:

29181

2025-12-04 22:34:54 UTC

Snort Subscriber Rules Update

Date: 2025-12-04

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:


 * 1:65554 <-> ENABLED <-> SERVER-WEBAPP React Server Components remote code execution attempt (server-webapp.rules)

Modified Rules:

29171

2025-12-04 22:34:54 UTC

Snort Subscriber Rules Update

Date: 2025-12-04

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:


 * 1:65554 <-> ENABLED <-> SERVER-WEBAPP React Server Components remote code execution attempt (server-webapp.rules)

Modified Rules:

29170

2025-12-04 22:34:54 UTC

Snort Subscriber Rules Update

Date: 2025-12-04

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 2091700.

The format of the file is:

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

New Rules:


 * 1:65554 <-> ENABLED <-> SERVER-WEBAPP React Server Components remote code execution attempt (server-webapp.rules)

Modified Rules:

29161

2025-12-04 22:34:54 UTC

Snort Subscriber Rules Update

Date: 2025-12-04

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 2091601.

The format of the file is:

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

New Rules:


 * 1:65554 <-> ENABLED <-> SERVER-WEBAPP React Server Components remote code execution attempt (server-webapp.rules)

Modified Rules:

29160

2025-12-04 22:34:54 UTC

Snort Subscriber Rules Update

Date: 2025-12-04

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 2091600.

The format of the file is:

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

New Rules:


 * 1:65554 <-> ENABLED <-> SERVER-WEBAPP React Server Components remote code execution attempt (server-webapp.rules)

Modified Rules:

29151

2025-12-04 22:34:54 UTC

Snort Subscriber Rules Update

Date: 2025-12-04

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 2091501.

The format of the file is:

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

New Rules:


 * 1:65554 <-> ENABLED <-> SERVER-WEBAPP React Server Components remote code execution attempt (server-webapp.rules)

Modified Rules:

29141

2025-12-04 22:34:54 UTC

Snort Subscriber Rules Update

Date: 2025-12-04

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 2091401.

The format of the file is:

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

New Rules:


 * 1:65554 <-> ENABLED <-> SERVER-WEBAPP React Server Components remote code execution attempt (server-webapp.rules)

Modified Rules:

29130

2025-12-04 22:34:54 UTC

Snort Subscriber Rules Update

Date: 2025-12-04

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 2091300.

The format of the file is:

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

New Rules:


 * 1:65554 <-> ENABLED <-> SERVER-WEBAPP React Server Components remote code execution attempt (server-webapp.rules)

Modified Rules:

29111

2025-12-04 22:34:54 UTC

Snort Subscriber Rules Update

Date: 2025-12-04

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 2091101.

The format of the file is:

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

New Rules:


 * 1:65554 <-> ENABLED <-> SERVER-WEBAPP React Server Components remote code execution attempt (server-webapp.rules)

Modified Rules:

3000

2025-12-04 22:38:35 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.0.0.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

3031

2025-12-04 22:38:35 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.0.3.1.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

3034

2025-12-04 22:38:35 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.0.3.4.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

3100

2025-12-04 22:38:36 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.1.0.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

3101

2025-12-04 22:38:36 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.1.0.1.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

3110

2025-12-04 22:38:36 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.1.1.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

3130

2025-12-04 22:38:36 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.1.3.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

3140

2025-12-04 22:38:36 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.1.4.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

3150

2025-12-04 22:38:36 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.1.5.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

3170

2025-12-04 22:38:36 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.1.7.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

3190

2025-12-04 22:38:36 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.1.9.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

3200

2025-12-04 22:38:36 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

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:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

3351

2025-12-04 22:38:36 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

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:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

3360

2025-12-04 22:38:36 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

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:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

3370

2025-12-04 22:38:36 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

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:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

3700

2025-12-04 22:38:36 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

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:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

3900

2025-12-04 22:38:36 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

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:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

31110

2025-12-04 22:38:36 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

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:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

31150

2025-12-04 22:38:36 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

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:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

31180

2025-12-04 22:38:36 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

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:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

31200

2025-12-04 22:38:36 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

This is the complete list of rules modified and added in the Cisco Talos Certified rule pack for Snort version 3.1.20.0.

The format of the file is:

gid:sid <-> Message

New Rules:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

31210

2025-12-04 22:38:36 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

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:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

31350

2025-12-04 22:38:36 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

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:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

31440

2025-12-04 22:38:36 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

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:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules:

31470

2025-12-04 22:38:36 UTC

Snort Subscriber Rules Update

Date: 2025-12-04-001

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:

* 1:65554 <-> SERVER-WEBAPP React Server Components remote code execution attempt

Modified Rules: