CVE-2025-66200

Apache HTTP Server: mod_userdir+suexec bypass via AllowOverride FileInfo

At a glance

Severity: MEDIUM 5.4
EPSS: EPSS 0.65 % · percentile 51 (2026-10-27)
State: PUBLISHED
Published: 2025-12-05
Updated: 2025-12-05
Assigner: apache
NVD status: Analyzed

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.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L	CISA-ADP
CVSS 3.1	MEDIUM 5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L	NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Weaknesses (CWE)

CWE-288

European references

ENISA EUVD · EUVD-2025-201403
GCVE · GCVE-0-2025-66200

CERT-FR advisories

CERTFR-2026-AVI-0355 — Multiples vulnérabilités dans les produits Apple · cert.ssi.gouv.fr
CERTFR-2026-AVI-0199 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
CERTFR-2025-AVI-1082 — Multiples vulnérabilités dans les produits Microsoft · cert.ssi.gouv.fr
CERTFR-2025-AVI-1071 — Multiples vulnérabilités dans Apache HTTP Server · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* ≥ 2.4.7 < 2.4.66

Affected products

Product	Versions
Apache Software Foundation · Apache HTTP Server	affected 2.4.7 ≤ 2.4.65

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD