{"id":"CVE-2026-85884","title":"Missing authentication for critical function in Windows Health and Optimized Experiences Service allows an authorized attacker to elevate privileges locally.","summary":"Missing authentication for critical function in Windows Health and Optimized Experiences Service allows an authorized attacker to elevate privileges locally.","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-306"],"published":"2026-10-13","updated":"2026-10-13","sourceUpdated":"2026-10-13T23:18:55.707","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-85884","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85884","label":"secure@microsoft.com"}],"tags":["nvd","cve.org","exploit-available"],"ingestedAt":"2026-10-13T19:43:29.188Z","vendor":"Microsoft","product":"Windows 11 Version 24H2","affected":["windows_11_version_24h2 >= 10.0.26100.0 < 10.0.26100.9711","windows_11_version_25h2 >= 10.0.26200.0 < 10.0.26200.9711","windows_11_version_26h1 >= 10.0.28000.0 < 10.0.28000.3231","windows_11_version_26h2 >= 10.0.26300.0 < 10.0.26300.9711"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-13T21:58:50.083221Z"},"epss":0.00446,"epssPercentile":0.3865,"exploits":{"github":1,"githubRepos":["https://github.com/Beardhammer/CVE-2026-85884"],"checkedAt":"2026-10-27T19:18:26.538Z"},"exploitAvailable":true,"slug":"CVE-2026-85884","body":"## Overview\n\nMissing authentication for critical function in Windows Health and Optimized Experiences Service allows an authorized attacker to elevate privileges locally.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":55,"depthScoreParts":{"impact":42.9,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":223931,"id":"CVE-2026-85884","ts":1792280277165,"field":"exploit_available","old":"false","new":"true"}]}