{"id":"CVE-2025-55028","title":"Malicious scripts utilizing repetitive JavaScript alerts could prevent client user interaction in some scenarios and allow for denial of service attacks","summary":"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.","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwe":["CWE-400"],"vendor":"mozilla","product":"firefox","affected":["firefox < 142.0"],"patched":["firefox 142.0"],"published":"2025-08-19","updated":"2026-09-30","sourceUpdated":"2026-09-30T18:10:00.190","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-55028","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1850240","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-68/","label":"security@mozilla.org"}],"tags":["nvd"],"epss":0.00222,"epssPercentile":0.11537,"ingestedAt":"2026-09-30T18:17:24.453Z","slug":"CVE-2025-55028","body":"## Overview\n\nMalicious 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.\n\n## Affected\n\n- `firefox < 142.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `firefox 142.0`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}