CVE-2021-43546

Mozilla: Cursor spoofing could overlay user interface when native cursor is zoomed

Loading…

Severity

Low

Red Hat Product Security

5.4

CVSS 3.1

Review impact separately from score.

Published · December 7, 2021

Updated · November 22, 2025

Description

It was possible to recreate previous cursor spoofing attacks against users with a zoomed native cursor. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

CWE-1021 · Improper Restriction of Rendered UI Layers or Frames