{"id":"CVE-2018-4435","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-4435","generatedAt":"2026-10-29T02:03:59.757Z","title":"A logic issue was addressed with improved restrictions.","description":"A logic issue was addressed with improved restrictions. This issue affected versions prior to iOS 12.1.1, macOS Mojave 10.14.2, tvOS 12.1.1, watchOS 5.1.2.","published":"2019-04-03T18:29:16.000Z","lastModified":"2026-06-17T01:58:59.000Z","status":"Modified","sourceIdentifier":"product-security@apple.com","cvss":{"version":"3.0","score":7.8,"severity":"HIGH","vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-20"],"affected":["apple/iphone os","apple/mac os x","apple/tvos","apple/watchos"],"epss":{"score":0.03092,"percentile":0.87656,"date":"2026-10-27","history":[{"date":"2026-09-21","score":0.04676,"percentile":0.91374},{"date":"2026-09-22","score":0.03092,"percentile":0.87147}]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2018-12-11","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":45960,"kind":"exploit","title":"XNU - POSIX Shared Memory Mappings have Incorrect Maximum Protection","url":"https://www.exploit-db.com/exploits/45960","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/local/45960.txt","file":"exploits/multiple/local/45960.txt","published":"2018-12-11","added":"2018-12-11","updated":"2018-12-11","author":"Google Security Research","type":"local","platform":"multiple","port":null,"verified":true,"codes":["CVE-2018-4435"],"tags":"Local","aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://bugs.chromium.org/p/project-zero/issues/detail?id=1671"}]},"verdict":{"level":"urgent","text":"A public exploit is published in Exploit-DB (verified) and the impact is high, while EPSS rates exploitation at 3.1%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use."},"changes":[],"references":[{"url":"https://support.apple.com/kb/HT209340","tags":["Vendor Advisory"],"source":"product-security@apple.com"},{"url":"https://support.apple.com/kb/HT209341","tags":["Vendor Advisory"],"source":"product-security@apple.com"},{"url":"https://support.apple.com/kb/HT209342","tags":["Vendor Advisory"],"source":"product-security@apple.com"},{"url":"https://support.apple.com/kb/HT209343","tags":["Vendor Advisory"],"source":"product-security@apple.com"},{"url":"https://support.apple.com/kb/HT209340","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/kb/HT209341","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/kb/HT209342","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/kb/HT209343","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-4435","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."}