CVE-2021-29959

high

Published — · Modified —

CVSS v3

—

CVSS v2

—

VIR risk

8.0

Description

When a user has already allowed a website to access microphone and camera, disabling camera sharing would not fully prevent the website from re-enabling it without an additional prompt. This was only possible if the website kept recording with the microphone until re-enabling the camera. This vulnerability affects Firefox < 89.

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-2021-29959

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-202106-3

OS impact

OS	Version	Status	Fixed in
arch		fixed	`89.0-1`
debian	sid	fixed	`89.0-1`

References

https://security.archlinux.org/ASA-202106-3
https://security-tracker.debian.org/tracker/CVE-2021-29959

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