5.4

CVE-2025-66200: apache software foundation apache http server

CVSS: 5.4v3.1MediumAnalyzed
AliasesALPINE-CVE-2025-66200UBUNTU-CVE-2025-66200DEBIAN-CVE-2025-66200
Published 05-12-2025Last modified 05-12-2025
Open JSON

Vulnerability summary

CVE-2025-66200 is a medium (CVSS 5.4) vulnerability in apache software foundation apache http server. EPSS estimates a 0.65% chance of exploitation in the next 30 days, higher than 50.1% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.65%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 17 · Related 10
DLA-4452-1MGASA-2025-0322OPENSUSE-SU-2025:15808-1OPENSUSE-SU-2026:20030-1RHSA-2025:23732RHSA-2025:23919

Timeline

  1. 05-12-2025
    PublishedVulnerability first disclosed.
  2. 05-12-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.65%

Chance of exploitation in the next 30 days

Percentile

50%

Versus all other CVEs

30-day change

0.00 pp

From 0.65% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.65%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Alpine1 product
  • apache2< 2.4.66-r0
Apache1 product
Apache software foundation1 product
Debian1 product
  • apache2< 2.4.66-1~deb12u1 | < 2.4.66-1~deb13u1 | < 2.4.66-1
Ubuntu1 product
  • apache2< 2.4.7-1ubuntu4.22+esm12 | < 2.4.18-2ubuntu3.17+esm17 | < 2.4.29-1ubuntu4.27+esm7 | < 2.4.41-4ubuntu3.23+esm3 | < 2.4.52-1ubuntu4.18 | < 2.4.58-1ubuntu8.10 | < 2.4.64-1ubuntu3.2 | < 2.4.66-2ubuntu1

5 vendors · 5 products

References

10 links