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CVE WatchSep 23, 2026

CVE-2026-86243

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

CVSS

7.5

High

EPSS

—

KEV

—

Exploit Today

0

0-100

Published: Sep 23, 2026 · Last modified: Sep 23, 2026 · CWE-126

EPSS · 30d

Not enough EPSS history yet.

Technical 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.

Official references
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