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CVE-2026-80353VulnerabilityPublished

Apache Tomcat: TOCTOU when setting specific permissions for Unix Domain Sockets - Fix for CVE-2026-65183 did not

Affects tomcatSource GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2026-80353· High

Not known to be exploited : upgrade to 9.0.123 soon.

Data as of 29 Oct 2026, 14:41 UTC

Severity
High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

EPSS
0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
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. Weaponized: 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 29 Oct 2026.

What to do

Upgrade tomcat to 9.0.123.

Affected software

ProductAffectedFixed in
Bitnamitomcatpkg:bitnami/tomcatOther threatsAffected
  • >=9.0.47 <9.0.123
Fixed in
  • 9.0.123

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

AI-suggested

Users should upgrade Apache Tomcat to version 9.0.123 or later, which includes the fix for this vulnerability. No other mitigation steps are indicated by the vendor advisory.

Description

A time-of-check time-of-use (TOCTOU) race condition vulnerability exists in Apache Tomcat when creating Unix domain sockets for the APR/Native connector. This flaw allows an unauthorized local user to access the Unix domain socket. The previous fix for CVE-2026-65183 addressed only the NIO connector and did not resolve the issue in the APR/Native connector. The vulnerability affects Apache Tomcat versions from 9.0.47 through 9.0.122. Upgrading to version 9.0.123 resolves the issue.

References

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