5.6 Medium
AI Score
Confidence
Low
0.0004 Low
EPSS
Percentile
9.0%
In certain cases the JIT incorrectly optimized MSubstr operations, which led to out-of-bounds reads. This vulnerability affects Firefox < 125.
bugzilla.mozilla.org/show_bug.cgi?id=1885828
www.mozilla.org/security/advisories/mfsa2024-18/