CVE-2021-29993

HIGH 8.1CVE-2021-29993 · Published 03/11/2021 · updated 19/08/2026

In short

CVE-2021-29993 is a HIGH (CVSS 8.1) vulnerability affecting firefox mobile (mozilla).
Chance of exploitation in the next 30 days (EPSS): 0.73%, higher than 54.4% of all vulnerabilities.
Fix: update to 92.0 or later.

Package	Affected versions	Patched versions
firefox mobile mozilla	`< 92.0`	`92.0`

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.

References

bugzilla.mozilla.org/buglist.cgi · Broken Link
mozilla.org/security/advisories/mfsa2021-38 · Vendor Advisory

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Package

Affected versions

Patched versions

firefox mobile

mozilla

< 92.0

92.0

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