Related Vulnerabilities: CVE-2021-29947  

A security issue has been found in Firefox before version 88. Mozilla developers and community members reported memory safety bugs present in Firefox 87. 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

A security issue has been found in Firefox before version 88. Mozilla developers and community members reported memory safety bugs present in Firefox 87. 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-1834 firefox 87.0-2 88.0-1 High Testing

https://www.mozilla.org/en-US/security/advisories/mfsa2021-16/#CVE-2021-29947
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1651449%2C1674142%2C1693476%2C1696886%2C1700091