{"id":"CVE-2026-85873","aliases":["EUVD-2026-100142","GHSA-6286-h9rv-4j7m"],"status":"published","title":"Skype for Business Elevation of Privilege Vulnerability","description":"Improper authorization in Skype for Business and Microsoft Lync allows an authorized attacker to elevate privileges over a network.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00957,"percentile":0.6175,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-639"],"published":"2026-10-13T19:01:10Z","modified":"2026-11-10T20:43:58Z","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"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85873","tags":["vendor-advisory","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-85873"},{"url":"https://github.com/advisories/GHSA-6286-h9rv-4j7m"}],"sources":{"cve":[{"id":"CVE-2026-85873","title":"Skype for Business Elevation of Privilege Vulnerability","description":"Improper authorization in Skype for Business and Microsoft Lync allows an authorized attacker to elevate privileges over a network.","status":"published","published":"2026-10-13T19:01:10.463Z","modified":"2026-11-10T20:43:58.587Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-639"],"updated_at":"2026-11-10T22:18:29.471829Z"}],"euvd":[{"id":"EUVD-2026-100142","description":"Improper authorization in Skype for Business and Microsoft Lync allows an authorized attacker to elevate privileges over a network.","status":"published","published":"2026-10-13T19:01:10Z","modified":"2026-11-10T20:43:58Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-10T22:23:56.642439Z"}],"ghsa":[{"id":"GHSA-6286-h9rv-4j7m","title":"Improper authorization in Skype for Business and Microsoft Lync allows an authorized attacker to...","description":"Improper authorization in Skype for Business and Microsoft Lync allows an authorized attacker to elevate privileges over a network.","status":"published","published":"2026-10-13T21:36:11Z","modified":"2026-10-13T21:36:18Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T15:13:18.544547Z"}],"nvd":[{"id":"CVE-2026-85873","description":"Improper authorization in Skype for Business and Microsoft Lync allows an authorized attacker to elevate privileges over a network.","status":"published","published":"2026-10-13T19:21:14.78Z","modified":"2026-10-16T14:18:44.72Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:12:58.13117Z"}]}}