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.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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Related CVEs from 2025
- CVE-2025-55022Rejected reason: Not used
- CVE-2025-55023Rejected reason: Not used
- CVE-2025-55024Rejected reason: Not used
- CVE-2025-55025Rejected reason: Not used
- CVE-2025-55026Rejected reason: Not used
- CVE-2025-55027Rejected reason: Not used
- CVE-2025-55029Malicious scripts could bypass the popup blocker to spam new…7.5
- CVE-2025-5503A vulnerability, which was classified as critical, was found…8.8
- CVE-2025-55030Firefox for iOS would not respect a Content-Disposition head…6.1
- CVE-2025-55031Malicious pages could use Firefox for iOS to pass FIDO: link…9.8
- CVE-2025-55032Focus for iOS would not respect a Content-Disposition header…6.1
- CVE-2025-55033Dragging JavaScript links to the URL bar in Focus for iOS co…6.1
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