CVE-2025-55028
MEDIUMCVSS 6.5/10EPSS 0.21%
Last modified
CVE-2025-55028 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 142.0 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1850240Issue Tracking, Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2025-68/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2025-55028?
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.
How severe is CVE-2025-55028?
CVE-2025-55028 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2025-55028?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2025-55028?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST