CVE-2024-4770: Mozilla Firefox

High severity, CVSS 8.8. EPSS: 0.6% chance of exploitation in the next 30 days.

When saving a page to PDF, certain font styles could have led to a potential use-after-free crash. This vulnerability affects Firefox < 126, Firefox ESR < 115.11, and Thunderbird < 115.11.

Affected products

• Mozilla Firefox: before 115.11.0 (fixed in 115.11.0); before 126.0 (fixed in 126.0)
• Mozilla Thunderbird: before 115.11.0 (fixed in 115.11.0)

Published 2024-05-14. Last modified 2026-06-17.