{"id":"CVE-2017-11786","aliases":["EUVD-2017-3394","GHSA-2xjh-35wj-vw46"],"status":"published","title":"Skype for Business in Microsoft Lync 2013 SP1 and Skype for Business 2016 allows an attacker to...","description":"Skype for Business in Microsoft Lync 2013 SP1 and Skype for Business 2016 allows an attacker to steal an authentication hash that can be reused elsewhere, due to how Skype for Business handles authentication requests, aka \"Skype for Business Elevation of Privilege Vulnerability.\"","severity":{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.09392,"percentile":0.9544,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-294"],"published":"2017-10-13T13:00:00Z","modified":"2026-06-17T01:02:22Z","products":[{"vendor":"microsoft","product":"lync"},{"vendor":"microsoft","product":"skype for business"},{"vendor":"microsoft","product":"skype_for_business"},{"vendor":"microsoft corporation","product":"skype for business"}],"references":[{"url":"http://www.securityfocus.com/bid/101156","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11786","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory"]},{"url":"http://www.securitytracker.com/id/1039530","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-11786"},{"url":"https://github.com/advisories/GHSA-2xjh-35wj-vw46"}],"sources":{"cve":[{"id":"CVE-2017-11786","description":"Skype for Business in Microsoft Lync 2013 SP1 and Skype for Business 2016 allows an attacker to steal an authentication hash that can be reused elsewhere, due to how Skype for Business handles authentication requests, aka \"Skype for Business Elevation of Privilege Vulnerability.\"","status":"published","published":"2017-10-13T13:00:00Z","modified":"2024-09-16T18:03:43.734Z","updated_at":"2026-11-02T14:33:19.848632Z"}],"euvd":[{"id":"EUVD-2017-3394","description":"Skype for Business in Microsoft Lync 2013 SP1 and Skype for Business 2016 allows an attacker to steal an authentication hash that can be reused elsewhere, due to how Skype for Business handles authentication requests, aka \"Skype for Business Elevation of Privilege Vulnerability.\"","status":"published","published":"2017-10-13T13:00:00Z","modified":"2024-09-16T18:03:43Z","updated_at":"2026-11-03T00:55:36.293033Z"}],"ghsa":[{"id":"GHSA-2xjh-35wj-vw46","title":"Skype for Business in Microsoft Lync 2013 SP1 and Skype for Business 2016 allows an attacker to...","description":"Skype for Business in Microsoft Lync 2013 SP1 and Skype for Business 2016 allows an attacker to steal an authentication hash that can be reused elsewhere, due to how Skype for Business handles authentication requests, aka \"Skype for Business Elevation of Privilege Vulnerability.\"","status":"published","published":"2022-05-13T01:42:33Z","modified":"2023-02-02T05:00:50Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-294"],"updated_at":"2026-11-02T14:51:03.373063Z"}],"nvd":[{"id":"CVE-2017-11786","description":"Skype for Business in Microsoft Lync 2013 SP1 and Skype for Business 2016 allows an attacker to steal an authentication hash that can be reused elsewhere, due to how Skype for Business handles authentication requests, aka \"Skype for Business Elevation of Privilege Vulnerability.\"","status":"published","published":"2017-10-13T13:29:00.833Z","modified":"2026-06-17T01:02:22.123Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-294"],"updated_at":"2026-11-02T14:04:01.734197Z"}]}}