{"id":"CVE-2026-66306","aliases":["EUVD-2026-73934","GHSA-f56r-qvv6-jr8m"],"status":"published","title":"Skype for Business Information Disclosure Vulnerability","description":"Generation of error message containing sensitive information in Skype for Business allows an unauthorized attacker to disclose information over a network.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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":0.00922,"percentile":0.60642,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-209"],"published":"2026-09-08T18:30:36Z","modified":"2026-10-31T16:09:14Z","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-2026-66306","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-66306"},{"url":"https://github.com/advisories/GHSA-f56r-qvv6-jr8m"}],"sources":{"cve":[{"id":"CVE-2026-66306","title":"Skype for Business Information Disclosure Vulnerability","description":"Generation of error message containing sensitive information in Skype for Business allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-09-08T18:30:36.021Z","modified":"2026-10-31T16:09:14.495Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-209"],"updated_at":"2026-11-02T14:20:12.939084Z"}],"euvd":[{"id":"EUVD-2026-73934","description":"Generation of error message containing sensitive information in Skype for Business allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-09-08T18:30:36Z","modified":"2026-10-31T16:09:14Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-02T16:59:00.860117Z"}],"ghsa":[{"id":"GHSA-f56r-qvv6-jr8m","title":"Generation of error message containing sensitive information in Skype for Business allows an...","description":"Generation of error message containing sensitive information in Skype for Business allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-09-08T21:34:17Z","modified":"2026-09-08T21:34:25Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-209"],"updated_at":"2026-11-02T15:11:35.275364Z"}],"nvd":[{"id":"CVE-2026-66306","description":"Generation of error message containing sensitive information in Skype for Business allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-09-08T19:18:08.2Z","modified":"2026-09-16T19:24:24.507Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-209"],"updated_at":"2026-11-02T14:12:45.264578Z"}]}}