{"id":"CVE-2026-20806","published":"2026-04-14T16:57:51Z","modified":"2026-10-15T15:53:04Z","title":"Windows COM Server Information Disclosure Vulnerability","vendor":"Microsoft","product":"Windows 10 Version 1809","tier":"tail","description":{"text":"Access of resource using incompatible type ('type confusion') in Windows COM allows an authorized attacker to disclose information locally.","provenance":"source","from":"CVE.org"},"cvss":{"score":5.5,"severity":"MEDIUM","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.00341,"percentile":0.27508,"provenance":"source"},"cwes":[{"id":"CWE-843","name":"Access of Resource Using Incompatible Type"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20806","tags":["vendor-advisory","patch"]}],"priority":{"score":9.4,"factors":[{"name":"EPSS percentile","points":5.5},{"name":"CVSS severity","points":3.85}]},"vendorSlug":"microsoft","affectedVersions":[{"vendor":"Microsoft","product":"Windows 10 Version 1809","versions":[">= 10.0.17763.0, < 10.0.17763.8644"]},{"vendor":"Microsoft","product":"Windows 10 Version 21H2","versions":[">= 10.0.19044.0, < 10.0.19044.7184"]},{"vendor":"Microsoft","product":"Windows 10 Version 22H2","versions":[">= 10.0.19045.0, < 10.0.19045.7184"]},{"vendor":"Microsoft","product":"Windows 11 version 23H2","versions":[">= 10.0.22631.0, < 10.0.22631.6936"]},{"vendor":"Microsoft","product":"Windows 11 Version 23H2","versions":[">= 10.0.22631.0, < 10.0.22631.6936"]},{"vendor":"Microsoft","product":"Windows 11 Version 24H2","versions":[">= 10.0.26100.0, < 10.0.26100.8246"]},{"vendor":"Microsoft","product":"Windows 11 Version 25H2","versions":[">= 10.0.26200.0, < 10.0.26200.8246"]},{"vendor":"Microsoft","product":"Windows 11 version 26H1","versions":[">= 10.0.28000.0, < 10.0.28000.1836"]},{"vendor":"Microsoft","product":"Windows Server 2019","versions":[">= 10.0.17763.0, < 10.0.17763.8644"]},{"vendor":"Microsoft","product":"Windows Server 2019 (Server Core installation)","versions":[">= 10.0.17763.0, < 10.0.17763.8644"]}],"euvd":{"id":"EUVD-2026-22351","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-class-microsoft-windows-cwe-843"}}