Time-of-check Time-of-use (TOCTOU) Race Condition in Apache Tomcat - CVE-2026-65183
Published: August 26, 2026
Vulnerability identifier: #VU145380
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-65183
CWE-ID: CWE-367
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to access the Unix domain socket.
The vulnerability exists due to a race condition in Unix domain socket creation when setting specific permissions. A local user can win the race during socket creation to access the Unix domain socket.
Affected software
Apache Tomcat
How to mitigate CVE-2026-65183
Install security update from vendor's website.
Apache Tomcat - addressed in versions 9.0.121, 10.1.59, 11.0.25