7.5

CVE-2026-29169: apache software foundation apache http server NULL Pointer Dereference

CVSS: 7.5v3.1HighModified
AliasesALPINE-CVE-2026-29169UBUNTU-CVE-2026-29169DEBIAN-CVE-2026-29169
Published 04-05-2026Last modified 05-05-2026
Open JSON

Vulnerability summary

CVE-2026-29169 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in apache software foundation apache http server. EPSS estimates a 1.57% chance of exploitation in the next 30 days, higher than 75% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
1.57%
0%100%
Low · +0.98 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 16 · Related 8
MGASA-2026-0129OPENSUSE-SU-2026:10785-1OPENSUSE-SU-2026:21115-1RHSA-2026:17080RHSA-2026:27200RHSA-2026:34109

Timeline

  1. 04-05-2026
    PublishedVulnerability first disclosed.
  2. 05-05-2026
    Last modifiedVulnerability information updated.

Description

A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs. The only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version 1.2.0. Users are recommended to upgrade to version 2.4.66, which fixes this issue, or remove mod_dav_lock.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

1.57%

Chance of exploitation in the next 30 days

Percentile

75%

Versus all other CVEs

30-day change

+0.98 pp

From 0.59% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.57%

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< 2.4.67-r0
Apache1 product
Apache software foundation1 product
Debian1 product
  • apache2< 2.4.67-1~deb12u2 | < 2.4.67-1~deb13u2 | < 2.4.67-1
Ubuntu1 product
  • apache2< 2.4.7-1ubuntu4.22+esm13 | < 2.4.18-2ubuntu3.17+esm18 | < 2.4.29-1ubuntu4.27+esm9 | < 2.4.41-4ubuntu3.23+esm4 | < 2.4.52-1ubuntu4.20 | < 2.4.58-1ubuntu8.12 | < 2.4.64-1ubuntu3.4 | < 2.4.66-2ubuntu2.1

5 vendors · 5 products

References

10 links