tomcat native vulnerabilities and fixes

Recent CVEs affecting tomcat native, with upgrade or downgrade steps. 4 tracked.

Also searched as: tomcatnative.

tomcat native has 4 tracked vulnerabilities, 2 critical. A fixed release or vendor patch exists for 4. Most recent: 2026-09-23. Highest priority: CVE-2026-29145 (score 55/100).

• CVE-2026-29145 CRITICAL 9.1 UPGRADE UPGRADE CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerabili
• CVE-2026-86243 HIGH 7.5 UPGRADE Buffer over-read vulnerability in Apache Tomcat Native during the TLS handshake permits a malicious user to tr
• CVE-2026-86246 CRITICAL 9.1 UPGRADE Initialization of a resource with an insecure default vulnerability in Apache Tomcat Native enabled insecure o
• CVE-2026-86247 HIGH 7.4 UPGRADE Race condition within a thread vulnerability in Apache Tomcat Native allowed client certificate verification r

FAQ

How do I fix tomcat native vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is tomcat native being exploited right now?

None of the tracked tomcat native CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which tomcat native CVE should I patch first?

CVE-2026-29145 currently ranks highest (55/100): CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerabili.

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