Tomcat6: Time-of-check time-of-use (TOCTOU) race condition vulnerability in Apache Tomcat when creating unix domain
Affects tomcat6Source GCVE Database
Mentioned vulnerabilities
Not known to be exploited · fixed in 9.0.123 : patch tomcat6 soon.
Data as of 28 Oct 2026, 22:28 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- Patch
- Available – fixed in 9.0.123
Exploitation evidence
Disclosed: evidence found.
CVE published 20 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10tomcat10pkg:deb/ubuntu/tomcat10?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10tomcat11pkg:deb/ubuntu/tomcat11?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10tomcat9pkg:deb/ubuntu/tomcat9?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTStomcat10pkg:deb/ubuntu/tomcat10?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTStomcat9pkg:deb/ubuntu/tomcat9?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTStomcat11pkg:deb/ubuntu/tomcat11?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
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.