Description
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.
Scores
CVSS v3
8.8
EPSS
0.0020
EPSS Percentile
42.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Details
CWE
CWE-681
Status
published
Products (1)
mozilla/firefox
< 88.0
Published
Jun 24, 2021
Tracked Since
Feb 18, 2026