{"id":"CVE-2019-1253","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-1253","generatedAt":"2026-10-29T03:02:43.219Z","title":"Microsoft Windows AppX Deployment Server Privilege Escalation Vulnerability","description":"An elevation of privilege vulnerability exists when the Windows AppX Deployment Server improperly handles junctions.To exploit this vulnerability, an attacker would first have to gain execution on the victim system, aka 'Windows Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-1215, CVE-2019-1278, CVE-2019-1303.","published":"2019-09-11T22:15:16.000Z","lastModified":"2026-06-17T02:28:15.000Z","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":["CWE-59"],"affected":["microsoft/windows 10 1703","microsoft/windows 10 1709","microsoft/windows 10 1803","microsoft/windows 10 1809","microsoft/windows 10 1903","microsoft/windows server 1803","microsoft/windows server 1903","microsoft/windows server 2019"],"epss":{"score":0.11616,"percentile":0.96023,"date":"2026-10-27","history":[]},"kev":{"listed":true,"dateAdded":"2022-03-15","dueDate":"2022-04-05","knownRansomwareCampaignUse":"Known","notes":"Apply updates per vendor instructions.\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-1253"},"exploits":{"count":1,"verified":false,"firstPublished":"2019-09-16","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":47389,"kind":"exploit","title":"AppXSvc - Privilege Escalation","url":"https://www.exploit-db.com/exploits/47389","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/local/47389.txt","file":"exploits/windows/local/47389.txt","published":"2019-09-16","added":"2019-09-16","updated":"2019-09-16","author":"Gabor Seljan","type":"local","platform":"windows","port":null,"verified":false,"codes":["CVE-2019-1253"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 5 April 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"http://packetstormsecurity.com/files/154488/AppXSvc-17763.1.amd64fre.rs5_release.180914-1434-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-2019-1253","tags":["Patch","Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"http://packetstormsecurity.com/files/154488/AppXSvc-17763.1.amd64fre.rs5_release.180914-1434-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-2019-1253","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-1253","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-1253","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."}