CVE-2026-80353

EUVD-2026-105006

20.10.2026, 14:17

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.

TOCTOU

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
apache	CNA	UNKNOWN				---

Base Score

CVSS 3.x

EPSS Score

Percentile: 4.94%

Early Detection

Affected products identified ahead of NVD analysis through intelligence sources.

Vendor	Product	Version	Source
apache	tomcat	9.0.47 ≤ 𝑥 ≤ 9.0.122	CNA

Debian Releases

Debian Product

Codename

tomcat9

bookworm	9.0.70-2 fixed
forky	9.0.122-1 fixed
sid	9.0.122-1 fixed
trixie	9.0.95-1 fixed

Common Weakness Enumeration

CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
The software checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the software to perform invalid actions when the resource is in an unexpected state.

Vulnerability Media Exposure

[GERMAN] Apache Tomcat: Mehrere Schwachstellen
Ein entfernter Angreifer kann mehrere Schwachstellen in Apache Tomcat ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Informationen offenzulegen oder einen Denial of Service Angriff durchzuführen.
Published: 2026-10-20T22:00:00+00:00

References

https://lists.apache.org/thread.html/tr0q87qwvs80p9hc53tkwpzvnx0ywftr