CVE-2024-10466: Mozilla Firefox

High severity, CVSS 7.5. EPSS: 0.8% chance of exploitation in the next 30 days.

By sending a specially crafted push message, a remote server could have hung the parent process, causing the browser to become unresponsive. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Thunderbird < 128.4, and Thunderbird < 132.

Affected products

• Mozilla Firefox: before 128.4.0 (fixed in 128.4.0); before 132.0 (fixed in 132.0)
• Mozilla Thunderbird: before 128.4.0 (fixed in 128.4.0); from 129.0, before 132.0 (fixed in 132.0)

Published 2024-10-29. Last modified 2026-06-17.