CVE-2025-65082: Apache HTTP Server

Medium severity, CVSS 6.5. EPSS: 0.8% chance of exploitation in the next 30 days.

Improper Neutralization of Escape, Meta, or Control Sequences vulnerability in Apache HTTP Server through environment variables set via the Apache configuration unexpectedly superseding variables calculated by the server for CGI programs. This issue affects Apache HTTP Server from 2.4.0 through 2.4.65. Users are recommended to upgrade to version 2.4.66 which fixes the issue.

Affected products

• Apache HTTP Server: from 2.4.0, before 2.4.66 (fixed in 2.4.66)

Published 2025-12-05. Last modified 2026-09-25.