{"id":"CVE-2017-0263","published":"2017-05-12T14:29:05Z","modified":"2026-06-17T00:57:21Z","title":"Microsoft Win32k Privilege Escalation Vulnerability","vendor":"Microsoft","product":"Win32k","tier":"core","eol":null,"description":{"text":"The kernel-mode drivers in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allow local users to gain privileges via a crafted application, aka \"Win32k Elevation of Privilege Vulnerability.\"","provenance":"source","from":"NVD"},"summary":{"text":"The Win32k kernel-mode drivers in Microsoft Windows contain a use-after-free flaw that affects multiple Windows Server and client releases. A local user with low privileges can exploit it by running a crafted application to gain elevated privileges, with no user interaction required.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:11:19Z"},"cvss":{"score":7.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.10034,"percentile":0.95602,"date":"2026-10-28","provenance":"source"},"kev":{"dateAdded":"2022-02-10","dueDate":"2022-08-10","ransomware":false,"requiredAction":"Apply updates per vendor instructions.","notes":"https://nvd.nist.gov/vuln/detail/CVE-2017-0263","provenance":"source"},"vulncheckKev":{"dateAdded":"2017-05-09","exploitedFirstSeen":"2017-05-09","ransomware":false,"evidence":[{"url":"https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2017-May","date":"2017-05-09"},{"url":"https://docs.google.com/spreadsheets/d/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY/edit","date":"2017-05-09"},{"url":"https://www.fireeye.com/blog/threat-research/2017/05/eps-processing-zero-days.html","date":"2017-05-09"},{"url":"https://securelist.com/a-slice-of-2017-sofacy-activity/83930/","date":"2018-02-20"},{"url":"https://www.group-ib.com/resources/threat-research/silence_moving-into-the-darkside.pdf","date":"2018-09-01"},{"url":"https://marcoramilli.com/2019/12/05/apt28-attacks-evolution/","date":"2019-12-05"},{"url":"https://www.tenable.com/blog/daisy-chaining-how-vulnerabilities-can-be-greater-than-the-sum-of-their-parts","date":"2021-01-21"},{"url":"https://dl.acm.org/doi/pdf/10.1145/3465481.3465758","date":"2021-08-17"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2022-02-10"},{"url":"https://strapi.eurepoc.eu/uploads/Eu_Repo_C_APT_profile_Turla_c9c7d8ed38.pdf","date":"2022-12-15"}],"evidenceTotal":12,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"},{"name":"Actively_Exploited_Kev | Oct 18, 2026","url":"https://otx.alienvault.com/pulse/6ad38c22e1848f8189d1c121","created":"2026-10-17"}],"provenance":"machine"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"references":[{"url":"http://www.securityfocus.com/bid/98258","tags":["Broken Link","Third Party Advisory","VDB Entry"]},{"url":"http://www.securitytracker.com/id/1038449","tags":["Broken Link","Third Party Advisory","VDB Entry"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0263","tags":["Patch","Vendor Advisory"]},{"url":"https://www.exploit-db.com/exploits/44478/","tags":["Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://xiaodaozhi.com/exploit/117.html","tags":["Exploit","Third Party Advisory"]},{"url":"http://www.securityfocus.com/bid/98258","tags":["Broken Link","Third Party Advisory","VDB Entry"]},{"url":"http://www.securitytracker.com/id/1038449","tags":["Broken Link","Third Party Advisory","VDB Entry"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0263","tags":["Patch","Vendor Advisory"]},{"url":"https://www.exploit-db.com/exploits/44478/","tags":["Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://xiaodaozhi.com/exploit/117.html","tags":["Exploit","Third Party Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-0263","tags":["US Government Resource"]}],"techniques":[{"id":"T1068","name":"Exploitation for Privilege Escalation","tactics":["privilege-escalation"],"provenance":"source","basis":"ctid-cve","bases":["ctid-cve","ai-mapping"],"basisDetail":"CTID attack_to_cve (Phase 1); claude-haiku-5-5: kernel driver privilege escalation","mappingType":"uncategorized","evidence":[{"from":"description","quote":"allow local users to gain privileges via a crafted application","start":209,"end":271}],"confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1204.002","name":"Malicious File","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: user runs crafted application locally","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"allow local users to gain privileges via a crafted application","start":209,"end":271}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2017-0619","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2017-0619","exploited":true,"exploitedSince":"2022-02-10","provenance":"source"},"exploits":[{"id":44478,"url":"https://www.exploit-db.com/exploits/44478","title":"Microsoft Windows Manager (7 x86) - Menu Management Component UAF Privilege Elevation","type":"local","platform":"windows_x86","date":"2018-03-26","verified":false,"provenance":"source"}],"exploitSources":{"exploitdb":{"count":1,"earliest":"2018-03-26"},"pocGithub":{"count":1,"skipped":0,"earliest":"2019-01-07","earliestUrl":"https://github.com/R06otMD5/cve-2017-0263-poc","repos":[{"name":"R06otMD5/cve-2017-0263-poc","url":"https://github.com/R06otMD5/cve-2017-0263-poc","stars":0,"created":"2019-01-07"}]},"first":{"date":"2018-03-26","source":"Exploit-DB","url":"https://www.exploit-db.com/exploits/44478"},"provenance":"source"},"exploitRefs":["https://www.exploit-db.com/exploits/44478/","https://xiaodaozhi.com/exploit/117.html"],"flow":[{"stage":"exploitation","techniques":["T1204.002"],"provenance":"ai"},{"stage":"related","techniques":["T1068"],"provenance":"source"}],"timeline":[{"date":"2017-05-09","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2017-May","provenance":"source"},{"date":"2017-05-12","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-0263","provenance":"source"},{"date":"2018-03-26","kind":"exploit-public","label":"First public exploit: Exploit-DB (EDB-44478); 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1 Exploit-DB entry; 1 PoC-in-GitHub repo"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":5.46,"detail":"base score 7.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]},"lineage":{"familyId":"fam-class-microsoft-windows-cwe-416"}}