CVE Vulnerabilities

CVE-2025-66200

Authentication Bypass Using an Alternate Path or Channel

Published: Dec 05, 2025 | Modified: Dec 10, 2025
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
5.4 MODERATE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Ubuntu
MEDIUM
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mod_userdir+suexec bypass via AllowOverride FileInfo vulnerability in Apache HTTP Server. Users with access to use the RequestHeader directive in htaccess can cause some CGI scripts to run under an unexpected userid.

This issue affects Apache HTTP Server: from 2.4.7 through 2.4.65.

Users are recommended to upgrade to version 2.4.66, which fixes the issue.

Weakness

The product requires authentication, but the product has an alternate path or channel that does not require authentication.

Affected Software

NameVendorStart VersionEnd Version
Http_serverApache2.4.7 (including)2.4.66 (excluding)
Red Hat Enterprise Linux 10RedHathttpd-0:2.4.63-4.el10_1.3*
Red Hat Enterprise Linux 8RedHathttpd:2.4-8100020251212173309.489197e6*
Red Hat Enterprise Linux 9RedHathttpd-0:2.4.62-7.el9_7.3*
Apache2Ubuntudevel*
Apache2Ubuntujammy*
Apache2Ubuntunoble*
Apache2Ubuntuplucky*
Apache2Ubuntuquesting*
Apache2Ubuntuupstream*

Potential Mitigations

References