Description
A double-free issue could have occurred in `sec_pkcs7_decoder_start_decrypt()` when handling an error path. Under specific conditions, the same symmetric key could have been freed twice, potentially leading to memory corruption. This vulnerability affects Firefox < 133, Thunderbird < 133, Firefox ESR < 128.7, and Thunderbird < 128.7.
Metrics
CVSS 3.1 9.8/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | >= unspecified, < 133 |
| Mozilla | Thunderbird | >= unspecified, < 133 |
| Mozilla | Firefox ESR | >= unspecified, < 128.7 |
| Mozilla | Thunderbird | >= unspecified, < 128.7 |
| mozilla | firefox | < 133 |
| mozilla | thunderbird | < 133 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1899402Issue Tracking, Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2024-63/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2024-67/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-09/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-10/Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2025/02/msg00005.html
- https://lists.debian.org/debian-lts-announce/2025/02/msg00006.html
Timeline
- Published
- Nov 26, 2024
- Last modified
- Jun 17, 2026
- NVD status
- Modified