CVE-2021-23962

high

Published — · Modified —

CVSS v3

—

CVSS v2

—

VIR risk

8.0

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.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-23962

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-202102-1

OS impact

OS	Version	Status	Fixed in
arch		fixed	`85.0-1`
debian	sid	fixed	`85.0-1`

References

https://security.archlinux.org/ASA-202102-1
https://security-tracker.debian.org/tracker/CVE-2021-23962

Verify integrity in audit chain (admin only). AS-IS.