Medium (6.5) in mozilla firefox. EPSS 0.6% chance of exploitation in the next 30 days.
In unusual circumstances, an individual thread may outlive the thread's manager during shutdown. This could have led to a use-after-free causing a potentially exploitable crash. This vulnerability affects Firefox < 98.
Severity
CVSS 3.1
6.5 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS
0.6% chance of exploitation in the next 30 days; higher than 47% of CVEs (scores of 2026-10-31)