Unscored severity · published Oct 20, 2026
CVE-2026-80353
Apache Tomcat: TOCTOU when setting specific permissions for Unix Domain Sockets - Fix for CVE-2026-65183 did not address APR connector
–
CVSS
0.2%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TO
Tomcat · Apache
9.0.47 through 9.0.122 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80353
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-80353
lists.apache.org
https://lists.apache.org/thread.html/tr0q87qwvs80p9hc53tkwpzvnx0ywftr
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