CVE-2025-54143

Published: Aug 19, 2025Modified: Apr 13, 2026

9.8

Vector

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

Exploitability: 3.9 / Impact: 5.9

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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.

Affected (1)

Products: Mozilla: Firefox

Mozilla

1 product

Firefox

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Mozilla Firefox	Before 141.0

Related CWEs

CWE-693

Protection Mechanism Failure

The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

References (2)

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

Source: security@mozilla.org

Issue TrackingPermissions Required

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

Source: security@mozilla.org

Vendor Advisory

Timeline

No history available yet.