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CVE-2026-5402

CVE-2026-5402 · Heap-based Buffer Overflow in Wireshark

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

TLS protocol dissector heap overflow in Wireshark 4.6.0 to 4.6.4 allows denial of service and possible code execution

CVSS 8.8 · High · EPSS 0.4% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • wireshark

    Versions
    • ≥ 4.6.0, < 4.6.5: Affected (semver)

    Update to 4.6.5

  • wireshark Debian:14

    Versions
    • 4.4.7-1
    • 4.4.8-0exp1
    • 4.4.9-1
    • 4.6.0-0exp1
    • 4.6.0-1
    • 4.6.0~rc1-0exp1
    • 4.6.0~rc1-0exp2
    • 4.6.1-1
    • 4.6.1-2
    • 4.6.2-1
    • 4.6.2-3
    • 4.6.3-1
    • 4.6.4-1
    Affected ranges
    • ECOSYSTEM: < 4.6.5-1

    Update to 4.6.5-1

  • wireshark Ubuntu:Pro:14.04:LTS

    Versions
    • 1.10.2-1
    • 1.10.3-1
    • 1.10.5-1ubuntu1
    • 1.10.5-2
    • 1.10.6-1
    • 1.12.1+g01b65bf-4+deb8u11ubuntu0.14.04.1
    • 2.6.3-1~ubuntu14.04.1
    • 2.6.4-2~ubuntu14.04.1
    • 2.6.5-1~ubuntu14.04.1
    • 2.6.6-1~ubuntu14.04.0
    • 2.6.8-1~ubuntu14.04.0~esm1
    • 2.6.10-1~ubuntu14.04.0~esm1
    • 2.6.10-1~ubuntu14.04.0~esm2
    • 2.6.10-1~ubuntu14.04.0~esm3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wireshark Ubuntu:Pro:16.04:LTS

    Versions
    • 1.12.7+g7fc8978-1
    • 1.12.8+g5b6e543-2
    • 2.0.1+g59ea380-3build1
    • 2.0.2+ga16e22e-1
    • 2.2.6+g32dac6a-2ubuntu0.16.04
    • 2.6.3-1~ubuntu16.04.1
    • 2.6.4-2~ubuntu16.04.0
    • 2.6.5-1~ubuntu16.04.0
    • 2.6.6-1~ubuntu16.04.0
    • 2.6.8-1~ubuntu16.04.0
    • 2.6.10-1~ubuntu16.04.0
    • 2.6.10-1~ubuntu16.04.0+esm1
    • 2.6.10-1~ubuntu16.04.0+esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wireshark Ubuntu:Pro:18.04:LTS

    Versions
    • 2.4.2-1
    • 2.4.3-1
    • 2.4.4-1
    • 2.4.5-1
    • 2.6.3-1~ubuntu18.04.1
    • 2.6.4-2~ubuntu18.04.0
    • 2.6.5-1~ubuntu18.04.0
    • 2.6.6-1~ubuntu18.04.0
    • 2.6.8-1~ubuntu18.04.0
    • 2.6.10-1~ubuntu18.04.0
    • 2.6.10-1~ubuntu18.04.0+esm1
    • 2.6.10-1~ubuntu18.04.0+esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wireshark Ubuntu:Pro:20.04:LTS

    Versions
    • 3.0.5-1
    • 3.0.7-1
    • 3.2.1-1
    • 3.2.2-1
    • 3.2.3-1
    • 3.2.3-1ubuntu0.1~esm1
    • 3.2.3-1ubuntu0.1~esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wireshark Ubuntu:Pro:22.04:LTS

    Versions
    • 3.4.7-1~exp1
    • 3.4.9-1
    • 3.6.2-1ubuntu1
    • 3.6.2-2
    • 3.6.2-2ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wireshark Ubuntu:24.04:LTS

    Versions
    • 4.0.8-1
    • 4.0.10-1
    • 4.0.11-1
    • 4.2.0-1
    • 4.2.2-1
    • 4.2.2-1.1build1
    • 4.2.2-1.1build2
    • 4.2.2-1.1build3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wireshark Ubuntu:25.10

    Versions
    • 4.4.5-1
    • 4.4.6-2
    • 4.4.6-2build1
    • 4.4.7-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wireshark Ubuntu:26.10

    Versions
    • 4.6.4-1
    • 4.6.6-1
    • 4.6.6-2
    • 4.6.6-2build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wireshark Ubuntu:26.04:LTS

    Versions
    • 4.4.7-1
    • 4.6.0-1
    • 4.6.1-2
    • 4.6.2-3
    • 4.6.3-1
    • 4.6.4-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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