CVE-2025-55028

MEDIUM 6.5

JavaScript alerts could impede UI interaction or allow denial of service attacks

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

Vendor	mozilla
Product	firefox for ios
Ecosystems	Browser JavaScript
Industries	Technology
Published	Aug 19, 2025
Last Updated	Apr 13, 2026

Stay Ahead of the Next One

Get instant alerts for mozilla firefox for ios

Be the first to know when new medium vulnerabilities affecting mozilla firefox for ios are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

Affected Versions

Mozilla / Firefox for iOS

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗

bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=1850240 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-68/

Credits

Antoine Morin