{"id":"CVE-2026-85866","title":"Exposure of sensitive system information to an unauthorized control sphere in Windows ALPC allows an authorized attacker to disclose information locally.","summary":"Exposure of sensitive system information to an unauthorized control sphere in Windows ALPC allows an authorized attacker to disclose information locally.","severity":"medium","cvss":4.7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-497"],"published":"2026-10-13","updated":"2026-10-13","sourceUpdated":"2026-10-13T21:19:29.403","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-85866","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85866","label":"secure@microsoft.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-13T19:43:29.185Z","vendor":"Microsoft","product":"Windows 10 Version 1809","affected":["windows_10_version_1809 >= 10.0.17763.0 < 10.0.17763.9376","windows_10_version_21h2 >= 10.0.19044.0 < 10.0.19044.7807","windows_10_version_22h2 >= 10.0.19045.0 < 10.0.19044.7807","windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7652","windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7652","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","windows_server_2019 >= 10.0.17763.0 < 10.0.17763.9376","windows_server_2019_server_core_installation >= 10.0.17763.0 < 10.0.17763.9376","windows_server_2022 >= 10.0.20348.0 < 10.0.20348.5761","windows_server_2025 >= 10.0.26100.0 < 10.0.26100.33650","windows_server_2025_server_core_installation >= 10.0.26100.0 < 10.0.26100.33650"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-13T20:06:11.826536Z"},"slug":"CVE-2026-85866","body":"## Overview\n\nExposure of sensitive system information to an unauthorized control sphere in Windows ALPC allows an authorized attacker to disclose information locally.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":25.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}