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 u…

High CVSS 8.1

CVECVE-2021-29993

First seen2026-08-19 16:16 UTC

Disclosed2021-11-03 01:15 UTC

Last updated2026-08-19 16:16 UTC

Channel statusauto

Summary

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.

In-depth triage

No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).

Affected products

Sources

NVD DATABASE

Original Links

https://bugzilla.mozilla.org/buglist.cgi?bug_id=1712242%2C1708767%2C1712240%2C1708544%2C1729259 Broken Link
https://www.mozilla.org/security/advisories/mfsa2021-38/ Vendor Advisory
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1712242%2C1708767%2C1712240%2C1708544%2C1729259 Broken Link
https://www.mozilla.org/security/advisories/mfsa2021-38/ Vendor Advisory

Timeline

2026-08-19 nvd_ingest NVD