{"id":"CVE-2026-69646","aliases":["EUVD-2026-73939","GHSA-935c-p9xv-m74w"],"status":"published","title":"Skype for Business Spoofing Vulnerability","description":"Improper verification of cryptographic signature in Skype for Business allows an unauthorized attacker to perform spoofing over an adjacent network.","severity":{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.0032,"percentile":0.25219,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-347"],"published":"2026-09-08T18:33:11Z","modified":"2026-10-31T16:11:45Z","products":[{"vendor":"microsoft","product":"skype for business server 2015 cu13"},{"vendor":"microsoft","product":"skype for business server 2019 cu8"},{"vendor":"microsoft","product":"skype for business server subscription edition cu1"},{"vendor":"microsoft","product":"skype_for_business_server"},{"vendor":"microsoft","product":"skype_for_business_server_subscription_edition"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69646","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-69646"},{"url":"https://github.com/advisories/GHSA-935c-p9xv-m74w"}],"sources":{"cve":[{"id":"CVE-2026-69646","title":"Skype for Business Spoofing Vulnerability","description":"Improper verification of cryptographic signature in Skype for Business allows an unauthorized attacker to perform spoofing over an adjacent network.","status":"published","published":"2026-09-08T18:33:11.399Z","modified":"2026-10-31T16:11:45.485Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T13:50:16.178634Z"}],"euvd":[{"id":"EUVD-2026-73939","description":"Improper verification of cryptographic signature in Skype for Business allows an unauthorized attacker to perform spoofing over an adjacent network.","status":"published","published":"2026-09-08T18:33:11Z","modified":"2026-10-31T16:11:45Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T16:58:59.513791Z"}],"ghsa":[{"id":"GHSA-935c-p9xv-m74w","title":"Improper verification of cryptographic signature in Skype for Business allows an unauthorized...","description":"Improper verification of cryptographic signature in Skype for Business allows an unauthorized attacker to perform spoofing over an adjacent network.","status":"published","published":"2026-09-08T21:34:17Z","modified":"2026-09-08T21:34:26Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L","level":"high"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T15:11:35.275364Z"}],"nvd":[{"id":"CVE-2026-69646","description":"Improper verification of cryptographic signature in Skype for Business allows an unauthorized attacker to perform spoofing over an adjacent network.","status":"published","published":"2026-09-08T19:19:04.56Z","modified":"2026-09-16T19:26:34.54Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L","level":"high","assessor":"secondary"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:12:45.264578Z"}]}}