CVE-2022-45412: Mozilla Firefox

High severity, CVSS 8.8. EPSS: 0.8% chance of exploitation in the next 30 days.

When resolving a symlink such as <code>file:///proc/self/fd/1</code>, an error message may be produced where the symlink was resolved to a string containing unitialized memory in the buffer. <br>*This bug only affects Thunderbird on Unix-based operated systems (Android, Linux, MacOS). Windows is unaffected.*. This vulnerability affects Firefox ESR < 102.5, Thunderbird < 102.5, and Firefox < 107.

Affected products

• Mozilla Firefox: before 107.0 (fixed in 107.0)
• Mozilla Firefox ESR: before 102.5 (fixed in 102.5)
• Mozilla Thunderbird: before 102.5 (fixed in 102.5)

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