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Vulnerabilities

Vulnerability · CVE-2025-55028

Malicious scripts utilizing repetitive JavaScript alerts could prevent client user interaction in some scenarios and allow for denial of service attacks.

Published Aug 19, 2025 · catalog updated Apr 13, 2026 · Malicious scripts utilizing repetitive

Check this week

CVE-2025-55028 is not in CISA KEV. FIRST estimates a 22.00% chance of exploitation in the next 30 days. Check whether you run Malicious scripts utilizing repetitive.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Malicious scripts utilizing repetitive).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
22.00%
Remediation
Advisory link
Affected products
vendor mozilla

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor mozillaversion unspecified

How to fix CVE-2025-55028

  • Recommended remediation

    A patch or advisory reference is linked. Open the original publisher for availability by product version.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-55028 is not in CISA KEV. FIRST estimates a 22.00% chance of exploitation in the next 30 days. Check whether you run Malicious scripts utilizing repetitive.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 22.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 19, 2025 · EUVD

    Detected

    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.

  2. Apr 13, 2026 · EUVD

    Updated

    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.

Sources

  • EUVDVulnerability recordEUVD-2025-25226

    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.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Apr 13, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.