CVE-2020-26952: Mozilla Firefox

High severity, CVSS 8.8. EPSS: 1.2% chance of exploitation in the next 30 days.

Incorrect bookkeeping of functions inlined during JIT compilation could have led to memory corruption and a potentially exploitable crash when handling out-of-memory errors. This vulnerability affects Firefox < 83.

Affected products

• Mozilla Firefox: before 83.0 (fixed in 83.0)

Published 2020-12-09. Last modified 2026-06-17.