What’s Vulnerable › Vulnerabilities

CVE-2024-11704

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-11-26 · updated 2026-06-17
• Weakness: CWE-415

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.

Affected products

• Mozilla Firefox: before 128.7.0; before 133.0 — fixed in 128.7.0, 133.0
• Mozilla Thunderbird: before 128.7.0; from 129.0 before 133.0 — fixed in 128.7.0, 133.0

How to fix

Upgrade to a fixed version: Mozilla Firefox 128.7.0, 133.0; Mozilla Thunderbird 128.7.0, 133.0. Check the vendor advisory for mitigations.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1899402
• https://www.mozilla.org/security/advisories/mfsa2024-63/
• https://www.mozilla.org/security/advisories/mfsa2024-67/
• https://www.mozilla.org/security/advisories/mfsa2025-09/
• https://www.mozilla.org/security/advisories/mfsa2025-10/
• https://lists.debian.org/debian-lts-announce/2025/02/msg00005.html
• https://lists.debian.org/debian-lts-announce/2025/02/msg00006.html

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