Vulnerability · Published Aug 25, 2026 · Assigned by apache
CVE-2026-65183Apache Tomcat: TOCTOU when setting specific permissions for Unix Domain Sockets
High 8.1
In plain English
A high-severity security flaw in Apache Tomcat from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in Apache Tomcat when creating unix domain sockets allows an unauthorised local user to access the unix domain socket. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.42 through 9.0.120. Users are recommended to upgrade to version 11.0.25, 10.1.58, 9.0.121, which fixes the issue.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | tomcat10 | no fix listed | DEBIAN-CVE-2026-65183 |
| Debian:13 | tomcat10 | no fix listed | DEBIAN-CVE-2026-65183 |
| Debian:14 | tomcat10 | 10.1.60-1 | DEBIAN-CVE-2026-65183 |
| Debian:13 | tomcat11 | no fix listed | DEBIAN-CVE-2026-65183 |
| Debian:14 | tomcat11 | no fix listed | DEBIAN-CVE-2026-65183 |
| Debian:12 | tomcat9 | 9.0.70-2 | DEBIAN-CVE-2026-65183 |
| Debian:13 | tomcat9 | 9.0.70-2 | DEBIAN-CVE-2026-65183 |
| Debian:14 | tomcat9 | 9.0.70-2 | DEBIAN-CVE-2026-65183 |
| Ubuntu:24.04:LTS | tomcat10 | no fix listed | UBUNTU-CVE-2026-65183 |
| Ubuntu:26.04:LTS | tomcat10 | no fix listed | UBUNTU-CVE-2026-65183 |
| Ubuntu:26.10 | tomcat10 | no fix listed | UBUNTU-CVE-2026-65183 |
| Ubuntu:26.04:LTS | tomcat11 | no fix listed | UBUNTU-CVE-2026-65183 |
| Ubuntu:26.10 | tomcat11 | no fix listed | UBUNTU-CVE-2026-65183 |
| Ubuntu:24.04:LTS | tomcat9 | no fix listed | UBUNTU-CVE-2026-65183 |
| Ubuntu:26.04:LTS | tomcat9 | no fix listed | UBUNTU-CVE-2026-65183 |
| Ubuntu:26.10 | tomcat9 | no fix listed | UBUNTU-CVE-2026-65183 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Tomcat | 11.0.0-M1 – through 11.0.2410.1.0-M1 – through 10.1.579.0.42 – through 9.0.120 |
Weakness: CWE-367 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H