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Fencer Intel
high 8.1

CVE-2026-80353 json

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

published 22d ago modified 12d ago also BIT-tomcat-2026-80353 , EUVD-2026-105006

cvss
8.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits
0
none known

Summary

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.

Patch / fix

  • bitnami tomcat 9.0.123
  • apache tomcat-coyote 9.0.123
  • org.apache.tomcat tomcat-coyote 9.0.123
  • apache tomcat 9.0.123
  • apache tomcat-embed-core 9.0.123
  • org.apache.tomcat.embed tomcat-embed-core 9.0.123
  • tomcat9 Debian 14, Debian 13, Debian 12 9.0.70-2

debian advisories DEBIAN-CVE-2026-80353

  • tomcat SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +8 more 9.0.123-150200.126.1
  • tomcat SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 9.0.123-3.182.2
  • libapr1 SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 1.6.5-4.13.1
  • libtcnative-1-0 SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 1.3.9-3.9.1

suse advisories SUSE-SU-2026:5116-1SUSE-SU-2026:4927-1

  • tomcat openSUSE Tumbleweed 9.0.123-1.1

opensuse advisories openSUSE-SU-2026:12254-1

Is CVE-2026-80353 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-80353 updated cvss 3.6

tomcat: tomcat: Unauthorized socket access via TOCTOU race condition

  • Red Hat Enterprise Linux 8 tomcat, tomcat-lib, tomcat-webapps, tomcat-el-3.0-api, pki-servlet-engine, tomcat-docs-webapp, +4 more Red Hat Enterprise Linux 9 tomcat, tomcat-lib, tomcat-webapps, tomcat-el-3.0-api, pki-servlet-engine, tomcat-docs-webapp, +4 more Red Hat Enterprise Linux 10 tomcat9 Red Hat JBoss Web Server 5 jws5-tomcat, jws5-tomcat-lib, jws5-tomcat-jsvc, jws5-tomcat-javadoc, jws5-tomcat-selinux, jws5-tomcat-webapps, +7 more
    affected: workaround, no fix available “Switch affected connectors from APR/Native to the standard NIO connector, or restrict local directory permissions on the socket's parent path to deny unprivileged local users traversal and access.”
  • Red Hat Hardened Images tomcat10 10.1.61-0.1.hum1, tomcat11 11.0.27-0.1.hum1, tomcat10-lib 10.1.61-0.1.hum1, tomcat11-lib 11.0.27-0.1.hum1, tomcat10-common 10.1.61-0.1.hum1, tomcat11-common 11.0.27-0.1.hum1, +14 more
    fixed: vendor fix “Switch affected connectors from APR/Native to the standard NIO connector, or restrict local directory permissions on the socket's parent path to deny unprivileged local users traversal and access.” RHSA-2026:85926
  • Red Hat Enterprise Linux 6 tomcat6, tomcat6-lib, tomcat6-log4j, tomcat6-javadoc, tomcat6-webapps, tomcat6-el-2.1-api, +4 more Red Hat Enterprise Linux 7 tomcat, tomcat-lib, tomcat-jsvc, tomcat-javadoc, tomcat-webapps, tomcat-el-2.2-api, +4 more Red Hat Enterprise Linux 10 tomcat Red Hat Hardened Images hi/tomcat Red Hat JBoss Web Server 6 jws6-tomcat, jws6-tomcat-lib, jws6-tomcat-javadoc, jws6-tomcat-selinux, jws6-tomcat-webapps, jws6-tomcat-el-5.0-api, +4 more Red Hat JBoss Web Server 7 jws7-tomcat
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
13d ago

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CISA ADP 3.1 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
OSV 3.1 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
bitnami tomcat
>=9.0.47, <9.0.123
9.0.123

Affected products

  • Apache Software Foundation Apache Tomcat

Classification

Weakness
  • CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.