CVE-2021-23962

HIGH

Firefox < 85.0 - Use-After-Free via RowCountChanged Method

Title source: llm
STIX 2.1

Description

Incorrect use of the '<RowCountChanged>' method could have led to a user-after-poison and a potentially exploitable crash. This vulnerability affects Firefox < 85.

References (2)

Core 2
Core References
Release Notes, Vendor Advisory x_refsource_misc
https://www.mozilla.org/security/advisories/mfsa2021-03/
Issue Tracking, Permissions Required, Vendor Advisory x_refsource_misc
https://bugzilla.mozilla.org/show_bug.cgi?id=1677194

Scores

CVSS v3 8.8
EPSS 0.0034
EPSS Percentile 56.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

Status published
Products (1)
mozilla/firefox < 85.0
Published Feb 26, 2021
Tracked Since Feb 18, 2026