{"id":"CVE-2026-85921","title":"Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.","summary":"Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","cwe":["CWE-415"],"vendor":"microsoft","product":"windows_11_26h1","affected":["windows_11_26h1 < 10.0.28000.2956"],"patched":["windows_11_26h1 10.0.28000.2956"],"published":"2026-09-14","updated":"2026-09-29","sourceUpdated":"2026-09-29T19:24:48.280","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-85921","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85921","label":"secure@microsoft.com"}],"tags":["nvd","cve.org"],"epss":0.00348,"epssPercentile":0.28294,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-14T19:11:21.507210Z"},"ingestedAt":"2026-09-14T19:13:23.460Z","slug":"CVE-2026-85921","body":"## Overview\n\nDouble free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.\n\n## Affected\n\n- `windows_11_26h1 < 10.0.28000.2956`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `windows_11_26h1 10.0.28000.2956`","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}