{"id":"CVE-2026-61936","aliases":["EUVD-2026-56340","GHSA-m4w5-xvq5-9w6f"],"status":"published","title":"Windows Defender Firewall Service Security Feature Bypass Vulnerability","description":"Missing authorization in Windows Defender Firewall Service allows an authorized attacker to bypass a security feature locally.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00302,"percentile":0.23254,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-862"],"published":"2026-08-11T17:04:01Z","modified":"2026-11-10T21:57:41Z","products":[{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 21h2"},{"vendor":"microsoft","product":"windows 10 version 22h2"},{"vendor":"microsoft","product":"windows 11 version 23h2"},{"vendor":"microsoft","product":"windows 11 version 24h2"},{"vendor":"microsoft","product":"windows 11 version 25h2"},{"vendor":"microsoft","product":"windows 11 version 26h1"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server 2022"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"},{"vendor":"microsoft","product":"windows_10_1809"},{"vendor":"microsoft","product":"windows_10_21h2"},{"vendor":"microsoft","product":"windows_10_22h2"},{"vendor":"microsoft","product":"windows_11_23h2"},{"vendor":"microsoft","product":"windows_11_24h2"},{"vendor":"microsoft","product":"windows_11_25h2"},{"vendor":"microsoft","product":"windows_11_26h1"},{"vendor":"microsoft","product":"windows_server_2019"},{"vendor":"microsoft","product":"windows_server_2022"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61936","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-61936"},{"url":"https://github.com/advisories/GHSA-m4w5-xvq5-9w6f"}],"sources":{"cve":[{"id":"CVE-2026-61936","title":"Windows Defender Firewall Service Security Feature Bypass Vulnerability","description":"Missing authorization in Windows Defender Firewall Service allows an authorized attacker to bypass a security feature locally.","status":"published","published":"2026-08-11T17:04:01.369Z","modified":"2026-11-10T21:57:41.296Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-862"],"updated_at":"2026-11-10T22:48:51.483784Z"}],"euvd":[{"id":"EUVD-2026-56340","description":"Missing authorization in Windows Defender Firewall Service allows an authorized attacker to bypass a security feature locally.","status":"published","published":"2026-08-11T17:04:01Z","modified":"2026-11-10T21:57:41Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-10T23:24:18.338578Z"}],"ghsa":[{"id":"GHSA-m4w5-xvq5-9w6f","title":"Missing authorization in Windows Defender Firewall Service allows an authorized attacker to...","description":"Missing authorization in Windows Defender Firewall Service allows an authorized attacker to bypass a security feature locally.","status":"published","published":"2026-08-11T18:31:10Z","modified":"2026-08-11T18:31:18Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:10:18.748745Z"}],"nvd":[{"id":"CVE-2026-61936","description":"Missing authorization in Windows Defender Firewall Service allows an authorized attacker to bypass a security feature locally.","status":"published","published":"2026-08-11T17:18:17.343Z","modified":"2026-08-16T19:16:51.867Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:12:36.499002Z"}]}}