CVE-2022-42928: Mozilla Firefox

High severity, CVSS 8.8. EPSS: 0.9% chance of exploitation in the next 30 days.

Certain types of allocations were missing annotations that, if the Garbage Collector was in a specific state, could have lead to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 106, Firefox ESR < 102.4, and Thunderbird < 102.4.

Affected products

• Mozilla Firefox: before 106.0 (fixed in 106.0)
• Mozilla Firefox ESR: before 102.4 (fixed in 102.4)
• Mozilla Thunderbird: before 102.4 (fixed in 102.4)

Published 2022-12-22. Last modified 2026-06-17.