{"@odata.context":"https://api.msrc.microsoft.com/sug/v2.0/sugodata/v2.0/en-US/$metadata#vulnerability/$entity","id":"00000000-0000-0000-0000-0000d1664822","releaseDate":"2026-09-14T07:00:00-07:00","cveNumber":"CVE-2026-85921","cveTitle":"Windows Secure Kernel Mode Elevation of Privilege Vulnerability","releaseNumber":"2026-Sep","vulnType":"Security Vulnerability","latestRevisionDate":"2026-09-27T07:00:00-07:00","description":"<p>Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.</p>\n","cweList":["CWE-415: Double Free"],"cweDetailsListForSearch":["cwe: CWE-415: Double Free","cweUrl: https://cwe.mitre.org/data/definitions/415.html"],"unformattedDescription":"<p>Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.</p>","mitreText":"CVE-2026-85921","mitreUrl":"https://www.cve.org/CVERecord?id=CVE-2026-85921","publiclyDisclosed":"No","exploited":"No","latestSoftwareReleaseId":2,"latestSoftwareRelease":"Exploitation Less Likely","olderSoftwareReleaseId":0,"denialOfService":"N/A","tag":"Windows Secure Kernel Mode","issuingCna":"Microsoft","issuingCnaId":100000001,"severityId":100000000,"severity":"Critical","impactId":100000002,"impact":"Elevation of Privilege","langCode":"en-US","baseScore":"8.2","temporalScore":"7.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","vectorStringSource":"Microsoft","isMariner":false,"customerActionRequired":true,"customerActionRequiredId":1,"cweDetailsList":[{"keys":["cwe","cweUrl"],"values":["CWE-415: Double Free","https://cwe.mitre.org/data/definitions/415.html"]}],"articles":[{"title":"Windows Secure Kernel Mode Elevation of Privilege Vulnerability","articleType":"100000000","description":"<p>Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges over a network.</p>\n","ordinal":10000},{"articleType":"FAQ","description":"<p><strong>What privileges could be gained by an attacker who successfully exploited this vulnerability?</strong></p>\n<p>An attacker who successfully exploited this vulnerability could gain Virtual Trust Level 1 (VTL1) privileges.</p>\n","ordinal":10000},{"title":"Windows Secure Kernel Mode Elevation of Privilege Vulnerability","articleType":"100000000","description":"<p>Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.</p>\n","ordinal":10000}],"revisions":[{"cveNumber":"CVE-2026-85921","version":1.2,"revisionDate":"2026-09-27T07:00:00-07:00","initialDate":"0001-01-01T00:00:00Z","description":"<p>Acknowledgement Updated</p>\n","unformattedDescription":"Acknowledgement Updated","notificationNeeded":false,"notificationSent":false,"sourceId":"676228c4-f5ba-f111-aaae-000d3a5aaec7"},{"cveNumber":"CVE-2026-85921","version":1,"revisionDate":"2026-09-14T07:00:00-07:00","initialDate":"0001-01-01T00:00:00Z","description":"<p>Information published.</p>\n","unformattedDescription":"Information published.","notificationNeeded":false,"notificationSent":false,"sourceId":"580e191b-46b0-f111-93a1-000d3ac5fb71"},{"cveNumber":"CVE-2026-85921","version":1.1,"revisionDate":"2026-09-25T07:00:00-07:00","initialDate":"0001-01-01T00:00:00Z","description":"<p>Updated an acknowledgement. This is an informational change only.</p>\n","unformattedDescription":"Updated an acknowledgement. This is an informational change only.","notificationNeeded":false,"notificationSent":false,"sourceId":"e77c68a5-f0b8-f111-93a1-000d3ac5fb71"}]}