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CVE-2026-65183

Apache Tomcat: TOCTOU when setting specific permissions for Unix Domain Sockets

HIGH
8.1
CVSS Score
Published: August 25, 2026 at 09:44 PM UTC
Updated: August 27, 2026 at 03:41 PM UTC
1 product affected across 1 vendorTomcat

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Severity
HIGH8.1
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Tomcat· Apache
95%
10.1.0 ≤ v < 10.1.5810.1.0-M1 ≤ v ≤ 10.1.5711.0.0 ≤ v < 11.0.2511.0.0-M1 ≤ v ≤ 11.0.249.0.42 ≤ v ≤ 9.0.1209.0.42 ≤ v < 9.0.12110.1.0-M111.0.0-M19.0.42
Affected range stops below 10.1.58, so it looks safe — our inference, not a vendor statement
Affected range stops below 11.0.25, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 7.0.0 (unaffected)
Vendor states this is fixed in 8.5.0 (unaffected)
Affected range stops below 9.0.121, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Vendor AdvisoryMailing List
Source: cverecord
https://lists.apache.org/thread/748o4st6d5dk6n3l7tgzo5yl68gg05c0
Third Party AdvisoryMailing List
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2026/08/26/2

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-367

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