CVE-2023-29537: Mozilla Firefox

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

Multiple race conditions in the font initialization could have led to memory corruption and execution of attacker-controlled code. This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.

Affected products

• Mozilla Firefox: before 112.0 (fixed in 112.0)
• Mozilla Firefox Mobile: before 112.0 (fixed in 112.0)
• Mozilla Focus: before 112.0 (fixed in 112.0)

Published 2023-06-02. Last modified 2026-08-19.