High severity · published Aug 25, 2026
CVE-2026-65183
Apache Tomcat: TOCTOU when setting specific permissions for Unix Domain Sockets
8.1
CVSS
0.4%
EPSS
No
On KEV
Description
Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in Apache Tomcat when creating unix domain sockets allows an unauthorised local user to access the unix domain socket.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.42 through 9.0.120.
Users are recommended to upgrade to version 11.0.25, 10.1.58, 9.0.121, which fixes the issue.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 34% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TO
Tomcat · Apache
11.0.0-M1 through 11.0.24; 10.1.0-M1 through 10.1.57; 9.0.42 through 9.0.120 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-65183
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-65183
Vendor Advisory
https://lists.apache.org/thread/748o4st6d5dk6n3l7tgzo5yl68gg05c0
Third Party Advisory
http://www.openwall.com/lists/oss-security/2026/08/26/2
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