CVE-2021-29983

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

Description

Firefox for Android could get stuck in fullscreen mode and not exit it even after normal interactions that should cause it to exit. *Note: This issue only affected Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 91.

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-2021-29983

OS impact

OSVersionStatusFixed in
arch archaffected
debian debiansidfixed0

References

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