NULL pointer dereference in Apache HTTP Server - CVE-2026-46729
Published: October 1, 2026
Vulnerability identifier: #VU153095
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-46729
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to a null pointer dereference in mod_heartmonitor when processing traffic received over a unicast listener. A remote attacker can send traffic to the unicast listener to cause a denial of service.
Affected software
Apache HTTP Server
How to mitigate CVE-2026-46729
Install security update from vendor's website.
Apache HTTP Server - update to 2.4.69