CVE-2021-23957

HighCVSS 7.4/10Last modified Jun 17, 2026

Description

Navigations through the Android-specific `intent` URL scheme could have been misused to escape iframe sandbox. Note: This issue only affected Firefox for Android. Other operating systems are unaffected. This vulnerability affects Firefox < 85.

Metrics

CVSS 3.1 7.4/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N

Affected software

Vendor	Product	Versions
Mozilla	Firefox	< 85

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1584582Issue Tracking, Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-03/Release Notes, Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1584582Issue Tracking, Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-03/Release Notes, Vendor Advisory

Timeline

Published: Feb 26, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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