{"id":"CVE-2026-45599","title":"Windows UPnP Device Host Remote Code Execution Vulnerability","summary":"Use after free in Universal Plug and Play (upnp.dll) allows an unauthorized attacker to execute code over a network.","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","cvssSource":"cna","cwe":["CWE-416"],"vendor":"Microsoft","product":"Windows 10 Version 1607","affected":["windows_10_version_1607 >= 10.0.14393.0 < 10.0.14393.9234","windows_10_version_1809 >= 10.0.17763.0 < 10.0.17763.8880","windows_10_version_21h2 >= 10.0.19044.0 < 10.0.19044.7417","windows_10_version_22h2 >= 10.0.19045.0 < 10.0.19045.7417","windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7219","windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7219","windows_11_version_24h2 >= 10.0.26100.0 < 10.0.26100.8655","windows_11_version_25h2 >= 10.0.26200.0 < 10.0.26200.8655","windows_11_version_26h1 >= 10.0.28000.0 < 10.0.28000.2269","windows_server_2012 >= 6.2.9200.0 < 6.2.9200.26132","windows_server_2012_server_core_installation >= 6.2.9200.0 < 6.2.9200.26132","windows_server_2012_r2 >= 6.3.9600.0 < 6.3.9600.23228","windows_server_2012_r2_server_core_installation >= 6.3.9600.0 < 6.3.9600.23228","windows_server_2016 >= 10.0.14393.0 < 10.0.14393.9234","windows_server_2016_server_core_installation >= 10.0.14393.0 < 10.0.14393.9234","windows_server_2019 >= 10.0.17763.0 < 10.0.17763.8880","windows_server_2019_server_core_installation >= 10.0.17763.0 < 10.0.17763.8880","windows_server_2022 >= 10.0.20348.0 < 10.0.20348.5256","windows_server_2025 >= 10.0.26100.0 < 10.0.26100.32995","windows_server_2025_server_core_installation >= 10.0.26100.0 < 10.0.26100.32995"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-06-10T03:57:04.959861Z"},"published":"2026-06-09","updated":"2026-09-24","sourceUpdated":"2026-09-24T13:44:28.925Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-45599","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45599","label":"Windows UPnP Device Host Remote Code Execution Vulnerability"}],"tags":["cve.org"],"epss":0.0052,"epssPercentile":0.43206,"ingestedAt":"2026-09-24T14:44:21.396Z","slug":"CVE-2026-45599","body":"## Overview\n\nUse after free in Universal Plug and Play (upnp.dll) allows an unauthorized attacker to execute code over a network.\n\n## Affected\n\n- `windows_10_version_1607 >= 10.0.14393.0 < 10.0.14393.9234`\n- `windows_10_version_1809 >= 10.0.17763.0 < 10.0.17763.8880`\n- `windows_10_version_21h2 >= 10.0.19044.0 < 10.0.19044.7417`\n- `windows_10_version_22h2 >= 10.0.19045.0 < 10.0.19045.7417`\n- `windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7219`\n- `windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7219`\n- `windows_11_version_24h2 >= 10.0.26100.0 < 10.0.26100.8655`\n- `windows_11_version_25h2 >= 10.0.26200.0 < 10.0.26200.8655`\n- `windows_11_version_26h1 >= 10.0.28000.0 < 10.0.28000.2269`\n- `windows_server_2012 >= 6.2.9200.0 < 6.2.9200.26132`\n- `windows_server_2012_server_core_installation >= 6.2.9200.0 < 6.2.9200.26132`\n- `windows_server_2012_r2 >= 6.3.9600.0 < 6.3.9600.23228`\n- `windows_server_2012_r2_server_core_installation >= 6.3.9600.0 < 6.3.9600.23228`\n- `windows_server_2016 >= 10.0.14393.0 < 10.0.14393.9234`\n- `windows_server_2016_server_core_installation >= 10.0.14393.0 < 10.0.14393.9234`\n- `windows_server_2019 >= 10.0.17763.0 < 10.0.17763.8880`\n- `windows_server_2019_server_core_installation >= 10.0.17763.0 < 10.0.17763.8880`\n- `windows_server_2022 >= 10.0.20348.0 < 10.0.20348.5256`\n- `windows_server_2025 >= 10.0.26100.0 < 10.0.26100.32995`\n- `windows_server_2025_server_core_installation >= 10.0.26100.0 < 10.0.26100.32995`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}