{"id":"CVE-2017-13903","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-13903","generatedAt":"2026-10-28T23:57:25.794Z","title":"It allows remote attackers to modify the application state by leveraging incorrect message handling, as demonstrated by use of an Apple Watch to obtain an encryption key and unlock a door.","description":"An issue was discovered in certain Apple products. iOS before 11.2.1 is affected. tvOS before 11.2.1 is affected. The issue involves the \"HomeKit\" component. It allows remote attackers to modify the application state by leveraging incorrect message handling, as demonstrated by use of an Apple Watch to obtain an encryption key and unlock a door.","published":"2017-12-25T21:29:15.000Z","lastModified":"2026-06-17T01:05:21.000Z","status":"Modified","sourceIdentifier":"product-security@apple.com","cvss":{"version":"3.0","score":7.5,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"cwe":[],"affected":["apple/iphone os","apple/tvos"],"epss":{"score":0.01059,"percentile":0.64348,"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 (1.06%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://www.securityfocus.com/bid/102182","tags":["Third Party Advisory","VDB Entry"],"source":"product-security@apple.com"},{"url":"http://www.securitytracker.com/id/1040008","tags":["Third Party Advisory","VDB Entry"],"source":"product-security@apple.com"},{"url":"https://support.apple.com/HT208357","tags":["Vendor Advisory"],"source":"product-security@apple.com"},{"url":"https://support.apple.com/HT208359","tags":["Vendor Advisory"],"source":"product-security@apple.com"},{"url":"https://www.engadget.com/2017/12/21/apple-ignored-a-major-homekit-security-flaw-for-six-weeks/","tags":["Press/Media Coverage"],"source":"product-security@apple.com"},{"url":"http://www.securityfocus.com/bid/102182","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1040008","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/HT208357","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/HT208359","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.engadget.com/2017/12/21/apple-ignored-a-major-homekit-security-flaw-for-six-weeks/","tags":["Press/Media Coverage"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-13903","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."}