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.
References
Configurations
No configuration.
History
27 Oct 2026, 19:17
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| Summary | (en) 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. |
20 Oct 2026, 20:17
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Information
Published : 2026-10-20 20:17
Updated : 2026-10-27 19:17
NVD link : CVE-2026-113869
Mitre link : CVE-2026-113869
CVE.ORG link : CVE-2026-113869
JSON object : View
Products Affected
No product.
CWE
CWE-416
Use After Free