What’s Vulnerable › Vulnerabilities

CVE-2026-65183: Apache Tomcat: TOCTOU when setting specific permissions for Unix Domain Sockets

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-25 · updated 2026-08-27
• Weakness: CWE-367

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 products

• Apache Tomcat: from 9.0.42 before 9.0.121; from 10.1.0 before 10.1.58; from 11.0.0 before 11.0.25 — fixed in 10.1.58, 11.0.25, 9.0.121

How to fix

Upgrade to a fixed version: Apache Tomcat 10.1.58, 11.0.25, 9.0.121. Check the vendor advisory for mitigations.

References

• https://lists.apache.org/thread/748o4st6d5dk6n3l7tgzo5yl68gg05c0
• http://www.openwall.com/lists/oss-security/2026/08/26/2

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