---
title: WAF Release - 2025-09-28 - Emergency · Changelog
description: Cloudflare WAF managed rulesets 2025-09-28 emergency release
chatbotDeprioritize: true
source_url:
  html: https://developers.cloudflare.com/changelog/2025-09-28-emergency-waf-release/
  md: https://developers.cloudflare.com/changelog/2025-09-28-emergency-waf-release/index.md
---

# Changelog

New updates and improvements at Cloudflare.

[Subscribe to RSS](https://developers.cloudflare.com/changelog/rss/index.xml)\
[View all RSS feeds](https://developers.cloudflare.com/fundamentals/new-features/available-rss-feeds/)

![hero image](https://developers.cloudflare.com/_astro/hero.CVYJHPAd_ZEA2nF.svg)

[← Back to all posts](https://developers.cloudflare.com/changelog/)

## WAF Release - 2025-09-28 - Emergency

Sep 28, 2025

[WAF](https://developers.cloudflare.com/waf/)

This week highlights multiple critical Cisco vulnerabilities (CVE-2025-20363, CVE-2025-20333, CVE-2025-20362). This flaw stems from improper input validation in HTTP(S) requests. An authenticated VPN user could send crafted requests to execute code as root, potentially compromising the device.

**Key Findings**

* Cisco (CVE-2025-20333, CVE-2025-20362, CVE-2025-20363): Multiple vulnerabilities that could allow attackers to exploit unsafe deserialization and input validation flaws. Successful exploitation may result in arbitrary code execution, privilege escalation, or command injection on affected systems.

**Impact**

Cisco (CVE-2025-20333, CVE-2025-20362, CVE-2025-20363): Exploitation enables attackers to escalate privileges or achieve remote code execution via command injection.

| Ruleset | Rule ID | Legacy Rule ID | Description | Previous Action | New Action | Comments |
| - | - | - | - | - | - | - |
| Cloudflare Managed Ruleset | a1bef4ada0b146d2862cad439ee0ab84 | 100788 | Cisco Secure Firewall Adaptive Security Appliance - Remote Code Execution - CVE:CVE-2025-20333, CVE:CVE-2025-20362, CVE:CVE-2025-20363 | N/A | Disabled | This is a New Detection |
| Cloudflare Managed Ruleset | 51de6ce6596a40eb8200452ad30f768e | 100788A | Cisco Secure Firewall Adaptive Security Appliance - Remote Code Execution - CVE:CVE-2025-20333, CVE:CVE-2025-20362, CVE:CVE-2025-20363 | N/A | Disabled | This is a New Detection |
