---
title: WAF Release - 2025-10-24 - Emergency · Changelog
description: Cloudflare WAF managed rulesets 2025-10-24 emergency release
chatbotDeprioritize: true
source_url:
  html: https://developers.cloudflare.com/changelog/2025-10-24-emergency-waf-release/
  md: https://developers.cloudflare.com/changelog/2025-10-24-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 - 2025-10-24 - Emergency

Oct 24, 2025

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

This week’s release introduces a new detection signature that enhances coverage for a critical vulnerability in Windows Server Update Services (WSUS), tracked as CVE-2025-59287.

**Key Findings**

The vulnerability allows unauthenticated attackers to potentially achieve remote code execution. The updated detection logic strengthens defenses by improving resilience against exploitation attempts targeting this flaw.

**Impact**

Successful exploitation of CVE-2025-59287 could enable attackers to hijack sessions, execute arbitrary commands, exfiltrate sensitive data, and disrupt storefront operations. These actions pose significant confidentiality and integrity risks to affected environments. Administrators should apply vendor patches immediately to mitigate exposure.

| Ruleset | Rule ID | Legacy Rule ID | Description | Previous Action | New Action | Comments |
| - | - | - | - | - | - | - |
| Cloudflare Managed Ruleset | 5eaeb5ea6e5a4bce867eb3ffbd72ba08 | N/A | Windows Server - Deserialization - CVE:CVE-2025-59287 | N/A | Block | This is a New Detection |
