CVE-2024-7652: Mozilla Firefox

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

An error in the ECMA-262 specification relating to Async Generators could have resulted in a type confusion, potentially leading to memory corruption and an exploitable crash. This vulnerability affects Firefox < 128, Firefox ESR < 115.13, Thunderbird < 115.13, and Thunderbird < 128.

Affected products

• Mozilla Firefox: before 115.13.0 (fixed in 115.13.0); before 128.0 (fixed in 128.0)
• Mozilla Thunderbird: before 115.13.0 (fixed in 115.13.0); from 116.0, before 128.0 (fixed in 128.0)

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