Skip to content
CVE PROGRAM SOURCE RECORD5.4 Medium

CVE-2026-113869

Use-after-free in S/MIME decryption during a security device password prompt

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
mozilla

Description

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 and Thunderbird 153.6.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Mozilla Thunderbird

  • 153.6 to ≤ 153.*unaffected
  • 158.0.1 to ≤ *unaffected

References