Malicious scripts utilizing repetitive JavaScript alerts could prevent client user interaction in some scenarios and allow for denial of service attacks. This vulnerability was fixed in Firefox for iOS 142.
https://www.mozilla.org/security/advisories/mfsa2025-68/
https://bugzilla.mozilla.org/show_bug.cgi?id=1850240
Source: Mitre, NVD
Published: 2025-08-19
Updated: 2026-04-13
Base Score: 7.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
Severity: High
Base Score: 6.5
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Severity: Medium
EPSS: 0.00018