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CVE-2026-80353VulnerabilityPublished Updated

Tomcat6: Time-of-check time-of-use (TOCTOU) race condition vulnerability in Apache Tomcat when creating unix domain

Affects tomcat6Source GCVE Database

0

Mentioned vulnerabilities

Authoritative record:CVE-2026-80353· High

Not known to be exploited · fixed in 9.0.123 : patch tomcat6 soon.

Data as of 28 Oct 2026, 22:28 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Patch
Available – fixed in 9.0.123

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 20 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.10tomcat10pkg:deb/ubuntu/tomcat10?arch=source&distro=stonkingOther threatsAffected
  • 10.1.40-1ubuntu1 – 10.1.57~us1-0ubuntu1
7 affected builds
Fixed in–
Ubuntu 26.10tomcat11pkg:deb/ubuntu/tomcat11?arch=source&distro=stonkingOther threatsAffected
  • 11.0.18-1 – 11.0.24-1ubuntu1
5 affected builds
Fixed in–
Ubuntu 26.10tomcat9pkg:deb/ubuntu/tomcat9?arch=source&distro=stonkingOther threatsAffected
  • =9.0.115-1
  • =9.0.115-1ubuntu1
  • =9.0.118-1
Fixed in–
Ubuntu 26.04 LTStomcat10pkg:deb/ubuntu/tomcat10?arch=source&distro=resoluteOther threatsAffected
  • =10.1.40-1ubuntu1
  • =10.1.40-1ubuntu1.26.04.1
  • =10.1.55-1ubuntu2~26.04.1
Fixed in–
Ubuntu 26.04 LTStomcat9pkg:deb/ubuntu/tomcat9?arch=source&distro=resoluteOther threatsAffected
  • 9.0.95-1ubuntu1 – 9.0.118-1~26.04.1
5 affected builds
Fixed in–
Ubuntu 26.04 LTStomcat11pkg:deb/ubuntu/tomcat11?arch=source&distro=resoluteOther threatsAffected
  • 11.0.6-1 – 11.0.22-2ubuntu2~26.04.1
6 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

Time-of-check time-of-use (TOCTOU) race condition vulnerability in Apache Tomcat when creating unix domain sockets for the APR/Native connector allows an unauthorised local user to access the unix domain socket. The fix for CVE-2026-65183 only addressed the NIO connector. It did not address the same issue in the APR/Native connector. This issue affects Apache Tomcat: from 9.0.47 through 9.0.122. Users are recommended to upgrade to version 9.0.123, which fixes the issue.

References

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