{"id":"CVE-2026-70005","title":"Weak authentication in Active Directory Federation Services (AD FS) allows an unauthorized attacker to bypass a security feature over a network.","summary":"Weak authentication in Active Directory Federation Services (AD FS) allows an unauthorized attacker to bypass a security feature over a network.","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","cwe":["CWE-1390"],"published":"2026-10-13","updated":"2026-10-14","sourceUpdated":"2026-10-14T19:17:19.407","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-70005","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70005","label":"secure@microsoft.com"}],"tags":["nvd","cve.org"],"epss":0.00642,"epssPercentile":0.50565,"ingestedAt":"2026-10-13T19:43:28.981Z","vendor":"Microsoft","product":"Windows Server 2019","affected":["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":"2026-10-14T18:46:52.300405Z"},"slug":"CVE-2026-70005","body":"## Overview\n\nWeak authentication in Active Directory Federation Services (AD FS) allows an unauthorized attacker to bypass a security feature over a network.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":33,"depthScoreParts":{"impact":32.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}