Related Vulnerabilities: CVE-2021-23964  

A security issue was found in Firefox before version 85.0. Mozilla developers reported memory safety bugs present in Firefox 84 and Firefox ESR 78.6. 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 was found in Firefox before version 85.0. Mozilla developers reported memory safety bugs present in Firefox 84 and Firefox ESR 78.6. 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-1492 firefox 84.0.2-1 85.0-1 High Fixed

https://www.mozilla.org/en-US/security/advisories/mfsa2021-03/#CVE-2021-23964
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1662507%2C1666285%2C1673526%2C1674278%2C1674835%2C1675097%2C1675844%2C1675868%2C1677590%2C1677888%2C1680410%2C1681268%2C1682068%2C1682938%2C1683736%2C1685260%2C1685925