CVE-2025-66200
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-12-05

Last updated on: 2025-12-10

Assigner: Apache Software Foundation

Description
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.
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Meta Information
Published
2025-12-05
Last Modified
2025-12-10
Generated
2026-06-16
AI Q&A
2025-12-05
EPSS Evaluated
2026-06-15
NVD
CVE-2025-66200
EUVD
EUVD-2025-201403
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
apache http_server From 2.4.7 (inc) to 2.4.66 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-288 The product requires authentication, but the product has an alternate path or channel that does not require authentication.
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Executive Summary

This vulnerability is a mod_userdir+suexec bypass in Apache HTTP Server caused by an AllowOverride FileInfo issue. It allows users who can use the RequestHeader directive in htaccess files to make some CGI scripts run under an unexpected user ID, potentially bypassing intended user restrictions.

Impact Analysis

The vulnerability can lead to CGI scripts running with unexpected user privileges, which may allow unauthorized access or actions on the server, potentially compromising security and user isolation.

Mitigation Strategies

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

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