CVE-2026-86243

HighCVSS 7.5/10Last modified Oct 6, 2026

Description

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-126

Affected software

No affected versions have been published.

Timeline

Published
Sep 23, 2026
Last modified
Oct 6, 2026
NVD status
Analyzed

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CVE-2026-86243: High severity, CVSS 7.5 | Vulnix