{"id":"CVE-2026-66306","state":"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.","publishedAt":"2026-09-08T18:30:36.021Z","updatedAt":"2026-10-26T23:24:41.456Z","severity":{"score":6.5,"label":"Medium","version":"3.1","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","source":"microsoft"},"assigner":"microsoft","products":["Microsoft Skype for Business Server 2015 CU13","Microsoft Skype for Business Server 2019 CU8","Microsoft Skype for Business Server Subscription Edition CU1"],"affected":[{"vendor":"Microsoft","product":"Skype for Business Server 2015 CU13","versions":[{"version":"9319.0","status":"affected","lessThan":"6.0.9319.885","versionType":"custom"}],"platforms":["x64-based Systems"]},{"vendor":"Microsoft","product":"Skype for Business Server 2019 CU8","versions":[{"version":"2046.0","status":"affected","lessThan":"7.0.2046.569","versionType":"custom"}],"platforms":["x64-based Systems"]},{"vendor":"Microsoft","product":"Skype for Business Server Subscription Edition CU1","versions":[{"version":"2046.0","status":"affected","lessThan":"7.0.2046.879","versionType":"custom"}],"platforms":["x64-based Systems"]}],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66306"],"weaknesses":["CWE-209"],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/66xxx/CVE-2026-66306.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-66306","state":"PUBLISHED","datePublished":"2026-09-08T18:30:36.021Z","dateUpdated":"2026-10-26T23:24:41.456Z","assignerShortName":"microsoft","assignerOrgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","dateReserved":"2026-07-24T18:06:51.294Z"},"containers":{"cna":{"title":"Skype for Business Information Disclosure Vulnerability","descriptions":[{"lang":"en-US","value":"Generation of error message containing sensitive information in Skype for Business allows an unauthorized attacker to disclose information over a network."}],"affected":[{"vendor":"Microsoft","product":"Skype for Business Server 2015 CU13","versions":[{"version":"9319.0","status":"affected","lessThan":"6.0.9319.885","versionType":"custom"}],"platforms":["x64-based Systems"]},{"vendor":"Microsoft","product":"Skype for Business Server 2019 CU8","versions":[{"version":"2046.0","status":"affected","lessThan":"7.0.2046.569","versionType":"custom"}],"platforms":["x64-based Systems"]},{"vendor":"Microsoft","product":"Skype for Business Server Subscription Edition CU1","versions":[{"version":"2046.0","status":"affected","lessThan":"7.0.2046.879","versionType":"custom"}],"platforms":["x64-based Systems"]}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66306","name":"Skype for Business Information Disclosure Vulnerability","tags":["vendor-advisory","patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en-US","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","baseSeverity":"MEDIUM","baseScore":6.5,"vectorString":"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-209","description":"CWE-209: Generation of Error Message Containing Sensitive Information","lang":"en-US","type":"CWE"}]}],"providerMetadata":{"shortName":"microsoft","orgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","dateUpdated":"2026-10-26T23:24:41.456Z"},"datePublic":"2026-09-08T14:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:skype_for_business_server_2019:*:cu8:*:*:*:*:*:*","versionStartIncluding":"2046.0","versionEndExcluding":"7.0.2046.569"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:skype_for_business_server_subscription_edition:*:cu1:*:*:*:*:*:*","versionStartIncluding":"2046.0","versionEndExcluding":"7.0.2046.879"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:skype_for_business_server_2015:*:cu13:*:*:*:*:*:*","versionStartIncluding":"9319.0","versionEndExcluding":"6.0.9319.885"}]}]}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-08T18:52:48.290572Z","id":"CVE-2026-66306","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-08T18:53:04.437Z"}}]}}}