CVE-2024-8385: Mozilla Firefox

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

A difference in the handling of StructFields and ArrayTypes in WASM could be used to trigger an exploitable type confusion vulnerability. This vulnerability affects Firefox < 130, Firefox ESR < 128.2, and Thunderbird < 128.2.

Affected products

• Mozilla Firefox: before 130.0 (fixed in 130.0)
• Mozilla Firefox ESR: before 128.2 (fixed in 128.2)

Published 2024-09-03. Last modified 2026-06-17.