CVE-2025-55029

Malicious scripts could spam popups for denial of service attacks

State: Published
Severity: 7.5 High
Published: Aug 19, 2025
Updated: Apr 13, 2026
Reserved: Aug 5, 2025

Description

Malicious scripts could bypass the popup blocker to spam new tabs, potentially resulting in denial of service attacks. This vulnerability was fixed in Firefox for iOS 142.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-400 Uncontrolled Resource Consumption

Affected Products

Product	Versions
Firefox for iOSMozilla	142 and laterNot affected

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1973577
https://www.mozilla.org/security/advisories/mfsa2025-68/

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