What’s Vulnerable › Vulnerabilities

CVE-2025-54090: Apache HTTP Server: 'RewriteCond expr' always evaluates to true in 2.4.64

• Severity: medium (CVSS 6.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-07-23 · updated 2026-06-17
• Weakness: CWE-253

Description

A bug in Apache HTTP Server 2.4.64 results in all "RewriteCond expr ..." tests evaluating as "true". Users are recommended to upgrade to version 2.4.65, which fixes the issue.

Affected products

• Apache HTTP Server: 2.4.64

References

• https://httpd.apache.org/security/vulnerabilities_24.html
• http://www.openwall.com/lists/oss-security/2025/07/24/2
• https://lists.debian.org/debian-lts-announce/2025/08/msg00009.html
• https://news.ycombinator.com/item?id=44666896

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