{"id":"CVE-2026-69646","title":"Improper verification of cryptographic signature in Skype for Business allows an unauthorized attacker to perform spoofing over an adjacent network.","summary":"Improper verification of cryptographic signature in Skype for Business allows an unauthorized attacker to perform spoofing over an adjacent network.","severity":"high","cvss":8.3,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L","cwe":["CWE-347"],"vendor":"microsoft","product":"skype_for_business_server","affected":["skype_for_business_server = 2015","skype_for_business_server = 2019","skype_for_business_server_subscription_edition = 7.0.2046.849"],"published":"2026-09-08","updated":"2026-09-16","sourceUpdated":"2026-09-16T19:26:34.540","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-69646","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69646","label":"secure@microsoft.com"}],"tags":["nvd","cve.org"],"epss":0.00206,"epssPercentile":0.10913,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-09T04:26:27.423040Z"},"ingestedAt":"2026-09-08T19:08:49.637Z","slug":"CVE-2026-69646","body":"## Overview\n\nImproper verification of cryptographic signature in Skype for Business allows an unauthorized attacker to perform spoofing over an adjacent network.\n\n## Affected\n\n- `skype_for_business_server = 2015`\n- `skype_for_business_server = 2019`\n- `skype_for_business_server_subscription_edition = 7.0.2046.849`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":45.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}