CVE-2021-29993

medium

Published — · Modified —

CVSS v3

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CVSS v2

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VIR risk

5.5

Description

Firefox for Android allowed navigations through the `intent://` protocol, which could be used to cause crashes and UI spoofs. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 92.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-29993

OS impact

OS	Version	Status	Fixed in
arch		fixed	`92.0-1`
debian	sid	fixed	`0`

References

https://security-tracker.debian.org/tracker/CVE-2021-29993

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