{"id":"CVE-2026-20805","title":"Exposure of sensitive information to an unauthorized actor in Desktop Windows Manager allows an authorized attacker to disclose information locally.","summary":"Exposure of sensitive information to an unauthorized actor in Desktop Windows Manager allows an authorized attacker to disclose information locally.","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-200"],"vendor":"microsoft","product":"windows_10_1607","affected":["windows_10_1607 < 10.0.14393.8783","windows_10_1809 < 10.0.17763.8276","windows_10_21h2 < 10.0.19044.6809","windows_10_22h2 < 10.0.19045.6809","windows_11_23h2 < 10.0.22631.6491","windows_11_24h2 < 10.0.26100.7623","windows_11_25h2 < 10.0.26200.7623","windows_server_2012","windows_server_2012 = r2","windows_server_2016 < 10.0.14393.8783","windows_server_2019 < 10.0.17763.8276","windows_server_2022 < 10.0.20348.4648","windows_server_2022_23h2 < 10.0.25398.2092","windows_server_2025 < 10.0.26100.7623"],"patched":["windows_10_1607 10.0.14393.8783","windows_10_1809 10.0.17763.8276","windows_10_21h2 10.0.19044.6809","windows_10_22h2 10.0.19045.6809","windows_11_23h2 10.0.22631.6491","windows_11_24h2 10.0.26100.7623","windows_11_25h2 10.0.26200.7623","windows_server_2016 10.0.14393.8783","windows_server_2019 10.0.17763.8276","windows_server_2022 10.0.20348.4648","windows_server_2022_23h2 10.0.25398.2092","windows_server_2025 10.0.26100.7623"],"published":"2026-01-13","updated":"2026-07-30","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-20805","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20805","label":"secure@microsoft.com"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20805","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","kev","in-the-wild","exploit-available"],"epss":0.05187,"epssPercentile":0.92121,"kev":true,"kevDateAdded":"2026-01-13","kevDueDate":"2026-02-03","kevRansomware":false,"exploited":true,"zeroDay":true,"ingestedAt":"2026-07-31T06:58:51.142Z","exploits":{"github":6,"githubRepos":["https://github.com/fevar54/CVE-2026-20805-POC","https://github.com/Uzair-Baig0900/CVE-2026-20805-PoC","https://github.com/mrk336/Inside-CVE-2026-20805-How-a-Windows-DWM-Flaw-Exposed-Sensitive-Data"],"checkedAt":"2026-09-21T15:28:25.317Z"},"exploitAvailable":true,"slug":"CVE-2026-20805","body":"## Overview\n\nExposure of sensitive information to an unauthorized actor in Desktop Windows Manager allows an authorized attacker to disclose information locally.\n\n## Affected\n\n- `windows_10_1607 < 10.0.14393.8783`\n- `windows_10_1809 < 10.0.17763.8276`\n- `windows_10_21h2 < 10.0.19044.6809`\n- `windows_10_22h2 < 10.0.19045.6809`\n- `windows_11_23h2 < 10.0.22631.6491`\n- `windows_11_24h2 < 10.0.26100.7623`\n- `windows_11_25h2 < 10.0.26200.7623`\n- `windows_server_2012`\n- `windows_server_2012 = r2`\n- `windows_server_2016 < 10.0.14393.8783`\n- `windows_server_2019 < 10.0.17763.8276`\n- `windows_server_2022 < 10.0.20348.4648`\n- `windows_server_2022_23h2 < 10.0.25398.2092`\n- `windows_server_2025 < 10.0.26100.7623`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `windows_10_1607 10.0.14393.8783`\n- `windows_10_1809 10.0.17763.8276`\n- `windows_10_21h2 10.0.19044.6809`\n- `windows_10_22h2 10.0.19045.6809`\n- `windows_11_23h2 10.0.22631.6491`\n- `windows_11_24h2 10.0.26100.7623`\n- `windows_11_25h2 10.0.26200.7623`\n- `windows_server_2016 10.0.14393.8783`\n- `windows_server_2019 10.0.17763.8276`\n- `windows_server_2022 10.0.20348.4648`\n- `windows_server_2022_23h2 10.0.25398.2092`\n- `windows_server_2025 10.0.26100.7623`","depth":"midnight","depthScore":56,"depthScoreParts":{"impact":30.3,"likelihood":1,"exploitation":25,"ransomware":0},"changes":[{"seq":5000,"id":"CVE-2026-20805","ts":1788887226876,"field":"exploit_available","old":"false","new":"true"},{"seq":3883,"id":"CVE-2026-20805","ts":1788886357925,"field":"exploit_available","old":"true","new":"false"},{"seq":2705,"id":"CVE-2026-20805","ts":1788883023447,"field":"exploit_available","old":"false","new":"true"},{"seq":1734,"id":"CVE-2026-20805","ts":1788882427616,"field":"exploit_available","old":"true","new":"false"},{"seq":840,"id":"CVE-2026-20805","ts":1788881860566,"field":"exploit_available","old":"false","new":"true"}]}