Description
Mozilla developers reported memory safety bugs present in Firefox 91. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 92.
References (2)
Core 2
Core References
Vendor Advisory x_refsource_misc
https://www.mozilla.org/security/advisories/mfsa2021-38/
Broken Link x_refsource_misc
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1723920%2C1725638
Scores
CVSS v3
8.8
EPSS
0.0041
EPSS Percentile
61.2%
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-787
Status
published
Products (1)
mozilla/firefox
< 92.0
Published
Nov 03, 2021
Tracked Since
Feb 18, 2026