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CVE-2026-86243

CVE-2026-86243 · Apache Tomcat Native: DoS via TLS handshake

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 7.5 · High · EPSS 0.6% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • apache tomcat native

    Versions
    • ≥ 2.0.0, ≤ 2.0.15: Affected (semver)
    • ≥ 1.3.0, ≤ 1.3.8: Affected (semver)

    No fix published

  • tomcat-native Debian:12

    Versions
    • 1.2.35-1
    • 1.3.1-1
    • 1.3.7-1
    • 2.0.14-1
    • 2.0.16-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat-native Debian:13

    Versions
    • 1.3.1-1
    • 1.3.7-1
    • 2.0.14-1
    • 2.0.16-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat-native Debian:14

    Versions
    • 1.3.1-1
    • 1.3.7-1
    • 2.0.14-1
    Affected ranges
    • ECOSYSTEM: < 2.0.16-1

    Update to 2.0.16-1

  • tomcat-native Ubuntu:16.04:LTS

    Versions
    • 1.1.33-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat-native Ubuntu:18.04:LTS

    Versions
    • 1.2.14-1
    • 1.2.16-1
    • 1.2.16-1build1
    • 1.2.21-1~18.04.1
    • 1.2.21-1~18.04.1build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat-native Ubuntu:20.04:LTS

    Versions
    • 1.2.23-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat-native Ubuntu:22.04:LTS

    Versions
    • 1.2.26-1
    • 1.2.31-1
    • 1.2.31-1build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat-native Ubuntu:24.04:LTS

    Versions
    • 1.2.35-1
    • 1.2.35-1build1
    • 1.2.35-1build2
    • 2.0.14-1~24.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat-native Ubuntu:26.10

    Versions
    • 1.3.1-1build1
    • 2.0.14-1
    • 2.0.15~us1-0ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat-native Ubuntu:26.04:LTS

    Versions
    • 1.3.1-1
    • 1.3.1-1build1
    • 2.0.14-1~26.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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