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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.

Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.4%top 65.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

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

EcosystemPackageFixed inAdvisory
Debian:12tomcat10no fix listedDEBIAN-CVE-2026-65183
Debian:13tomcat10no fix listedDEBIAN-CVE-2026-65183
Debian:14tomcat1010.1.60-1DEBIAN-CVE-2026-65183
Debian:13tomcat11no fix listedDEBIAN-CVE-2026-65183
Debian:14tomcat11no fix listedDEBIAN-CVE-2026-65183
Debian:12tomcat99.0.70-2DEBIAN-CVE-2026-65183
Debian:13tomcat99.0.70-2DEBIAN-CVE-2026-65183
Debian:14tomcat99.0.70-2DEBIAN-CVE-2026-65183
Ubuntu:24.04:LTStomcat10no fix listedUBUNTU-CVE-2026-65183
Ubuntu:26.04:LTStomcat10no fix listedUBUNTU-CVE-2026-65183
Ubuntu:26.10tomcat10no fix listedUBUNTU-CVE-2026-65183
Ubuntu:26.04:LTStomcat11no fix listedUBUNTU-CVE-2026-65183
Ubuntu:26.10tomcat11no fix listedUBUNTU-CVE-2026-65183
Ubuntu:24.04:LTStomcat9no fix listedUBUNTU-CVE-2026-65183
Ubuntu:26.04:LTStomcat9no fix listedUBUNTU-CVE-2026-65183
Ubuntu:26.10tomcat9no fix listedUBUNTU-CVE-2026-65183

Affected products (as reported)

VendorProductVersions
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

References