CVE-2025-54143

critical

Description

Sandboxed iframes on webpages could potentially allow downloads to the device, bypassing the expected sandbox restrictions declared on the parent page. This vulnerability was fixed in Firefox for iOS 141.

References

https://www.mozilla.org/security/advisories/mfsa2025-60/

https://bugzilla.mozilla.org/show_bug.cgi?id=1912671

Details

Source: Mitre, NVD

Published: 2025-08-19

Updated: 2026-04-13

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H