CVE-2021-23997
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.8%
exploitation probability
0.8%top 44% of all CVEs
observed exploitation
nono source reports it
Due to unexpected data type conversions, a use-after-free could have occurred when interacting with the font cache. We presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox < 88.
Affected products
Mozilla · Firefox