CVE-2021-23963

high
Published — · Modified —
CVSS v3
CVSS v2
VIR risk
8.0

Description

When sharing geolocation during an active WebRTC share, Firefox could have reset the webRTC sharing state in the user interface, leading to loss of control over the currently granted permission. 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-2021-23963

vendor Authored 2026-05-27

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

OS impact

OSVersionStatusFixed in
arch archfixed85.0-1
debian debiansidfixed85.0-1

References

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