CVE-2023-5175: Mozilla Firefox

Critical severity, CVSS 9.8. EPSS: 1% chance of exploitation in the next 30 days.

During process shutdown, it was possible that an `ImageBitmap` was created that would later be used after being freed from a different codepath, leading to a potentially exploitable crash. This vulnerability affects Firefox < 118.

Affected products

• Mozilla Firefox: before 118 (fixed in 118)

Published 2023-09-27. Last modified 2026-06-17.