Related Vulnerabilities: CVE-2021-29976  

Mozilla developers reported memory safety bugs present in Firefox 89. Some of these bugs showed evidence of memory corruption and Mozilla presumes that with enough effort some of these could have been exploited to run arbitrary code.

Severity High

Remote Yes

Type Arbitrary code execution

Description

Mozilla developers reported memory safety bugs present in Firefox 89. Some of these bugs showed evidence of memory corruption and Mozilla presumes that with enough effort some of these could have been exploited to run arbitrary code.

AVG-2148 firefox 89.0.2-1 90.0-1 High Testing

https://www.mozilla.org/security/advisories/mfsa2021-28/
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1700895%2C1703334%2C1706910%2C1711576%2C1714391