Bug 2547795

Summary:	CVE-2026-86243 tomcat-native: Apache Tomcat Native: Denial of Service via buffer over-read during TLS handshake [epel-all]
Product:	[Fedora] Fedora EPEL	Reporter:	Ted Jongseok Won <jwon>
Component:	tomcat-native	Assignee:	Dimitris Soumis <dsoumis>
Status:	NEW ---	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	high
Version:	epel10	CC:	csutherl, dsoumis
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["68869e2a-27cd-4d2c-b0bb-5b9add70ca91"]}
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2539395

Description Ted Jongseok Won 2026-10-08 06:51:15 UTC

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Buffer over-read vulnerability in Apache Tomcat Native during the TLS handshake permits a malicious user to trigger a DoS via a JVM crash.



This issue affects Apache Tomcat Native: from 2.0.0 through 2.0.15, from 1.3.0 through 1.3.8. Earlier, unsupported versions may also be affected.



Users are recommended to upgrade to version 1.3.9 or 2.0.16, which fix the issue.