CVE-2021-29983

—

CVSS 3.1

6.5 medium

EPSS

<1%p51

Published

Aug 17, 2021 (Aug 17, 2021)

Modified

Jun 17, 2026

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.

Vendors: mozilla
Products: firefox
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

NVD CVE.org GitHub PoCs EPSS (0.7%)

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