CVE-2022-1196: Mozilla Firefox ESR

Medium severity, CVSS 6.5. EPSS: 0.7% chance of exploitation in the next 30 days.

After a VR Process is destroyed, a reference to it may have been retained and used, leading to a use-after-free and potentially exploitable crash. This vulnerability affects Thunderbird < 91.8 and Firefox ESR < 91.8.

Affected products

• Mozilla Firefox ESR: before 91.8 (fixed in 91.8)
• Mozilla Thunderbird: before 91.8 (fixed in 91.8)

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