{"id":"CVE-2019-0803","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-0803","generatedAt":"2026-10-28T20:06:10.652Z","title":"Microsoft Win32k Privilege Escalation Vulnerability","description":"An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka 'Win32k Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-0685, CVE-2019-0859.","published":"2019-04-09T21:29:01.000Z","lastModified":"2026-06-17T02:08:56.000Z","status":"Analyzed","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"3.1","score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":[],"affected":["microsoft/windows 10 1507","microsoft/windows 10 1607","microsoft/windows 10 1703","microsoft/windows 10 1709","microsoft/windows 10 1803","microsoft/windows 10 1809","microsoft/windows 7","microsoft/windows 8.1","microsoft/windows rt 8.1","microsoft/windows server 1709","microsoft/windows server 1803","microsoft/windows server 2008","microsoft/windows server 2012","microsoft/windows server 2016","microsoft/windows server 2019"],"epss":{"score":0.4523,"percentile":0.98778,"date":"2026-10-27","history":[]},"kev":{"listed":true,"dateAdded":"2021-11-03","dueDate":"2022-05-03","knownRansomwareCampaignUse":"Known","notes":"Apply updates per vendor instructions.\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-0803"},"exploits":{"count":1,"verified":false,"firstPublished":"2019-05-15","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":46920,"kind":"exploit","title":"Microsoft Windows - 'Win32k' Local Privilege Escalation","url":"https://www.exploit-db.com/exploits/46920","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/local/46920.txt","file":"exploits/windows/local/46920.txt","published":"2019-05-15","added":"2019-05-23","updated":"2019-05-28","author":"Arch-Vile","type":"local","platform":"windows","port":null,"verified":false,"codes":["CVE-2019-0803"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://github.com/ExpLife0011/CVE-2019-0803/tree/141d9c78b3e6c993a5f6e046b8d0262f17fa0e77"}]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 3 May 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"http://packetstormsecurity.com/files/153034/Microsoft-Windows-Win32k-Privilege-Escalation.html","tags":["Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0803","tags":["Patch","Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"http://packetstormsecurity.com/files/153034/Microsoft-Windows-Win32k-Privilege-Escalation.html","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0803","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0803","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-0803","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."}