{"id":"CVE-2021-26422","aliases":["EUVD-2021-13228","GHSA-322h-m7q9-7x4q"],"status":"published","title":"Skype for Business and Lync Remote Code Execution Vulnerability","description":"Skype for Business and Lync Remote Code Execution Vulnerability","severity":{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.02219,"percentile":0.82798,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-77"],"published":"2021-05-11T19:11:13Z","modified":"2026-06-17T03:43:22Z","products":[{"vendor":"microsoft","product":"lync_server"},{"vendor":"microsoft","product":"microsoft lync server 2013 cu10"},{"vendor":"microsoft","product":"skype for business server 2015 cu11"},{"vendor":"microsoft","product":"skype for business server 2019 cu5"},{"vendor":"microsoft","product":"skype_for_business_server"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26422","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26422"},{"url":"https://github.com/advisories/GHSA-322h-m7q9-7x4q"}],"sources":{"cve":[{"id":"CVE-2021-26422","title":"Skype for Business and Lync Remote Code Execution Vulnerability","description":"Skype for Business and Lync Remote Code Execution Vulnerability","status":"published","published":"2021-05-11T19:11:13Z","modified":"2024-08-03T20:26:25.115Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:32:57.033395Z"}],"euvd":[{"id":"EUVD-2021-13228","description":"Skype for Business and Lync Remote Code Execution Vulnerability","status":"published","published":"2021-05-11T19:11:13Z","modified":"2024-08-03T20:26:25Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-03T03:24:51.962182Z"}],"ghsa":[{"id":"GHSA-322h-m7q9-7x4q","title":"Skype for Business and Lync Remote Code Execution Vulnerability","description":"Skype for Business and Lync Remote Code Execution Vulnerability","status":"published","published":"2022-05-24T19:02:04Z","modified":"2023-01-27T05:02:46Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T14:42:06.500861Z"}],"nvd":[{"id":"CVE-2021-26422","description":"Skype for Business and Lync Remote Code Execution Vulnerability","status":"published","published":"2021-05-11T19:15:08.907Z","modified":"2026-06-17T03:43:22.927Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:53.343329Z"}]}}