CVE-2025-65082

Apache HTTP Server: CGI environment variable override

Published Dec 5, 2025 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
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.

Analysis

No analysis available yet

Remediation

No remediation available yet

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4452-1 apache2 security update
Ubuntu USN Ubuntu USN USN-7968-1 Apache HTTP Server vulnerabilities
Ubuntu USN Ubuntu USN USN-8338-1 Apache HTTP Server vulnerabilities
History
Type Values Removed Values Added
CPEs cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Apache
Apache http Server
Vendors & Products Apache
Apache http Server
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Apache HTTP Server: CGI environment variable override
Weaknesses CWE-150
References
Weaknesses
  • CWE-150

    Improper Neutralization of Escape, Meta, or Control Sequences

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Dec 5, 2025, 7:30 PM
Reserved
Nov 17, 2025, 2:06 PM
Status
Analyzed
Published
Dec 5, 2025, 11:15 AM
Modified
Sep 25, 2026, 11:10 PM
Severity
Moderate
Public date
Dec 5, 2025, 10:46 AM