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9.8 Critical

CVE-2024-11704 A double-free issue could have occurred in `sec_pkcs7_decoder_start_decrypt()` when handling an error path

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 and versions

Product Affected versions Fixed in
Firefox 133 earliest → < 133 133
Thunderbird 128.7 earliest → < 128.7 128.7
Firefox ESR 128.7 earliest → < 128.7 128.7

Other CVEs of Firefox

The 2221 CVEs of Firefox →
CVE-2026-120572 Incorrect boundary conditions in the Layout: Block and Inline component 8.8 High CVE-2026-118027 Frame poisoning in the Layout component 9.1 Critical CVE-2026-118025 Other issue in the SVG component 8.8 High CVE-2026-118024 Use-after-free in the Graphics: Text component 8.8 High
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