{"id":"CVE-2026-66302","aliases":["EUVD-2026-74044","GHSA-j9qr-gj45-j8p8"],"status":"published","title":"Skype for Business Remote Code Execution Vulnerability","description":"External control of file name or path in Skype for Business allows an unauthorized attacker to execute code over a network.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00974,"percentile":0.62353,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-73"],"published":"2026-09-08T18:30:35Z","modified":"2026-10-26T23:24:39Z","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-2026-66302","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-66302"},{"url":"https://github.com/advisories/GHSA-j9qr-gj45-j8p8"}],"sources":{"cve":[{"id":"CVE-2026-66302","title":"Skype for Business Remote Code Execution Vulnerability","description":"External control of file name or path in Skype for Business allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-09-08T18:30:35.349Z","modified":"2026-10-26T23:24:39.87Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical","assessor":"cna"}],"cwes":["CWE-73"],"updated_at":"2026-11-02T14:20:12.939084Z"}],"euvd":[{"id":"EUVD-2026-74044","description":"External control of file name or path in Skype for Business allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-09-08T18:30:35Z","modified":"2026-10-26T23:24:39Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical"}],"updated_at":"2026-11-02T16:59:25.69167Z"}],"ghsa":[{"id":"GHSA-j9qr-gj45-j8p8","title":"External control of file name or path in Skype for Business allows an unauthorized attacker to...","description":"External control of file name or path in Skype for Business allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-09-08T21:34:17Z","modified":"2026-09-08T21:34:26Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-73"],"updated_at":"2026-11-02T15:11:35.275364Z"}],"nvd":[{"id":"CVE-2026-66302","description":"External control of file name or path in Skype for Business allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-09-08T19:18:07.69Z","modified":"2026-09-16T19:22:34.813Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-73"],"updated_at":"2026-11-02T14:12:45.264578Z"}]}}