{"id":"CVE-2026-66304","aliases":["EUVD-2026-74043","GHSA-wwcv-p4qq-wm65"],"status":"published","title":"Skype for Business Information Disclosure Vulnerability","description":"Server-side request forgery (ssrf) in Skype for Business allows an unauthorized attacker to disclose information over a network.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00973,"percentile":0.62316,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-918"],"published":"2026-09-08T18:30:33Z","modified":"2026-11-10T21:28:59Z","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-2026-66304","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-66304"},{"url":"https://github.com/advisories/GHSA-wwcv-p4qq-wm65"}],"sources":{"cve":[{"id":"CVE-2026-66304","title":"Skype for Business Information Disclosure Vulnerability","description":"Server-side request forgery (ssrf) in Skype for Business allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-09-08T18:30:33.883Z","modified":"2026-11-10T21:28:59.733Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-918"],"updated_at":"2026-11-10T22:48:52.144232Z"}],"euvd":[{"id":"EUVD-2026-74043","description":"Server-side request forgery (ssrf) in Skype for Business allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-09-08T18:30:33Z","modified":"2026-11-10T21:28:59Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-10T22:23:54.398087Z"}],"ghsa":[{"id":"GHSA-wwcv-p4qq-wm65","title":"Server-side request forgery (ssrf) in Skype for Business allows an unauthorized attacker to...","description":"Server-side request forgery (ssrf) 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":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T15:11:35.275364Z"}],"nvd":[{"id":"CVE-2026-66304","description":"Server-side request forgery (ssrf) in Skype for Business allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-09-08T19:18:07.95Z","modified":"2026-09-16T19:23:28.337Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:12:45.264578Z"}]}}