CVE-2021-23997

Due to unexpected data type conversions, a use-after-free could have occurred when interacting with the font cache

published June 24, 2021

CVSS
—
EPSS
1%
Percentile
56.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00816 · 56.7th percentile
Published
2021-06-24T13:25Z
EPSS history
Timeline
  • 24 JUN 13:25Z
    Due to unexpected data type conversions, a use-after-free could have occurred when interacting with the font cache
    cvelistv5