Related Vulnerabilities: CVE-2021-23962  

A security issue was found in Firefox before version 85.0. Incorrect use of the RowCountChanged method could have led to a use-after-poison and a potentially exploitable crash.

Severity Low

Remote Yes

Type Arbitrary code execution

Description

A security issue was found in Firefox before version 85.0. Incorrect use of the RowCountChanged method could have led to a use-after-poison and a potentially exploitable crash.

AVG-1492 firefox 84.0.2-1 85.0-1 High Fixed

https://www.mozilla.org/en-US/security/advisories/mfsa2021-03/#CVE-2021-23962
https://bugzilla.mozilla.org/show_bug.cgi?id=1677194