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CVE-2026-113869

CVE-2026-113869 · Use-after-free in S/MIME decryption during a security device password prompt

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

When Thunderbird asked for a security device password (for example a smartcard PIN or the Primary Password) while decrypting an S/MIME message, the message load could finish or be cancelled while the prompt was open. This freed the message decoder while it was still in use, causing a use-after-free and a potentially exploitable crash. This vulnerability was fixed in Thunderbird 158.0.1.

CVSS 5.4 · Medium · EPSS 0.3%

Published
Updated

Stack: system

Affected products and versions

  • thunderbird

    Versions
    • ≥ 158.0.1: Not affected (rpm)

    No fix published

  • thunderbird Ubuntu:22.04:LTS

    Versions
    • 1:91.1.2+build1-0ubuntu1
    • 1:91.3.0+build2-0ubuntu1
    • 1:91.3.1+build1-0ubuntu1
    • 1:91.3.2+build1-0ubuntu1
    • 1:91.4.0+build1.1-0ubuntu1
    • 1:91.4.0+build2-0ubuntu1
    • 1:91.5.0+build1-0ubuntu1
    • 1:91.5.1+build1-0ubuntu1
    • 1:91.6.1+build1-0ubuntu1
    • 1:91.7.0+build1-0ubuntu1
    • 1:91.7.0+build2-0ubuntu1
    • 1:91.8.0+build2-0ubuntu1
    • 1:91.9.1+build1-0ubuntu0.22.04.1
    • 1:91.11.0+build2-0ubuntu0.22.04.1
    • 1:102.2.2+build1-0ubuntu0.22.04.1
    • 1:102.4.2+build2-0ubuntu0.22.04.1
    • 1:102.7.1+build2-0ubuntu0.22.04.1
    • 1:102.8.0+build2-0ubuntu0.22.04.1
    • 1:102.9.0+build1-0ubuntu0.22.04.1
    • 1:102.10.0+build2-0ubuntu0.22.04.1
    • 1:102.11.0+build1-0ubuntu0.22.04.1
    • 1:102.13.0+build1-0ubuntu0.22.04.1
    • 1:102.15.0+build1-0ubuntu0.22.04.1
    • 1:102.15.1+build1-0ubuntu0.22.04.1
    • 1:115.3.1+build1-0ubuntu0.22.04.2
    • 1:115.4.1+build1-0ubuntu0.22.04.1
    • 1:115.5.0+build1-0ubuntu0.22.04.1
    • 1:115.6.0+build2-0ubuntu0.22.04.1
    • 1:115.8.1+build1-0ubuntu0.22.04.1
    • 1:115.9.0+build1-0ubuntu0.22.04.1
    • 1:115.10.1+build1-0ubuntu0.22.04.1
    • 1:115.11.0+build2-0ubuntu0.22.04.1
    • 1:115.12.0+build3-0ubuntu0.22.04.1
    • 1:115.13.0+build5-0ubuntu0.22.04.1
    • 1:115.15.0+build1-0ubuntu0.22.04.1
    • 1:115.16.0+build2-0ubuntu0.22.04.1
    • 1:115.18.0+build1-0ubuntu0.22.04.1
    • 1:128.12.0+build1-0ubuntu0.22.04.1
    • 1:140.7.1+build1-0ubuntu0.22.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • thunderbird Ubuntu:24.04:LTS

    Versions
    • 1:115.3.1+build1-0ubuntu1
    • 1:115.4.1+build1-0ubuntu1
    • 1:115.4.3+build1-0ubuntu1
    • 1:115.5.0+build1-0ubuntu1
    • 1:115.5.1+build1-0ubuntu1
    • 1:115.5.2+build2-0ubuntu1
    • 1:115.6.0+build1-0ubuntu1
    • 1:115.6.0+build2-0ubuntu1
    • 1:115.6.1+build1-0ubuntu1
    • 1:115.8.0+build1-0ubuntu1
    • 1:115.8.1+build1+snap2
    • 1:115.8.1+build1+snap3
    • 2:1snap1-0ubuntu1
    • 2:1snap1-0ubuntu3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • thunderbird Ubuntu:26.10

    Versions
    • 2:1snap1-0ubuntu5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • thunderbird Ubuntu:26.04:LTS

    Versions
    • 2:1snap1-0ubuntu3
    • 2:1snap1-0ubuntu4
    • 2:1snap1-0ubuntu5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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