{"id":"CVE-2018-4190","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-4190","generatedAt":"2026-10-29T01:53:00.068Z","title":"It allows remote attackers to obtain sensitive credential information that is transmitted during a CSS mask-image fetch.","description":"An issue was discovered in certain Apple products. iOS before 11.4 is affected. Safari before 11.1.1 is affected. iCloud before 7.5 on Windows is affected. iTunes before 12.7.5 on Windows is affected. tvOS before 11.4 is affected. The issue involves the \"WebKit\" component. It allows remote attackers to obtain sensitive credential information that is transmitted during a CSS mask-image fetch.","published":"2018-06-08T18:29:00.000Z","lastModified":"2026-06-17T01:58:32.000Z","status":"Modified","sourceIdentifier":"product-security@apple.com","cvss":{"version":"3.0","score":8.8,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-522"],"affected":["apple/safari","apple/iphone os","apple/tvos","apple/icloud","apple/itunes","canonical/ubuntu linux"],"epss":{"score":0.03395,"percentile":0.88759,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (3.40%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://www.securitytracker.com/id/1041029","tags":["Third Party Advisory","VDB Entry"],"source":"product-security@apple.com"},{"url":"https://security.gentoo.org/glsa/201808-04","tags":["Third Party Advisory"],"source":"product-security@apple.com"},{"url":"https://support.apple.com/HT208848","tags":["Vendor Advisory"],"source":"product-security@apple.com"},{"url":"https://support.apple.com/HT208850","tags":["Vendor Advisory"],"source":"product-security@apple.com"},{"url":"https://support.apple.com/HT208852","tags":["Vendor Advisory"],"source":"product-security@apple.com"},{"url":"https://support.apple.com/HT208853","tags":["Vendor Advisory"],"source":"product-security@apple.com"},{"url":"https://support.apple.com/HT208854","tags":["Vendor Advisory"],"source":"product-security@apple.com"},{"url":"https://usn.ubuntu.com/3687-1/","tags":["Third Party Advisory"],"source":"product-security@apple.com"},{"url":"http://www.securitytracker.com/id/1041029","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/201808-04","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/HT208848","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/HT208850","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/HT208852","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/HT208853","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/HT208854","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3687-1/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-4190","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}