{"id":"CVE-2025-53774","aliases":["EUVD-2025-23956","GHSA-hp6v-f522-x8gx"],"status":"published","title":"Microsoft 365 Copilot BizChat Information Disclosure Vulnerability","description":"Microsoft 365 Copilot BizChat Information Disclosure Vulnerability","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00682,"percentile":0.52812,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-77"],"published":"2025-08-07T21:01:03Z","modified":"2026-11-03T22:03:05Z","products":[{"vendor":"microsoft","product":"365_copilot_chat"},{"vendor":"microsoft","product":"microsoft 365 copilot's business chat"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53774","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-53774"},{"url":"https://github.com/advisories/GHSA-hp6v-f522-x8gx"}],"sources":{"cve":[{"id":"CVE-2025-53774","title":"Microsoft 365 Copilot BizChat Information Disclosure Vulnerability","description":"Microsoft 365 Copilot BizChat Information Disclosure Vulnerability","status":"published","published":"2025-08-07T21:01:03.348Z","modified":"2026-11-03T22:03:05.896Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-77"],"updated_at":"2026-11-03T23:33:08.294318Z"}],"euvd":[{"id":"EUVD-2025-23956","description":"Microsoft 365 Copilot BizChat Information Disclosure Vulnerability","status":"published","published":"2025-08-07T21:01:03Z","modified":"2026-11-03T22:03:05Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-03T23:01:34.673315Z"}],"ghsa":[{"id":"GHSA-hp6v-f522-x8gx","title":"Microsoft 365 Copilot BizChat Information Disclosure Vulnerability","description":"Microsoft 365 Copilot BizChat Information Disclosure Vulnerability","status":"published","published":"2025-08-07T21:31:08Z","modified":"2025-08-07T21:31:15Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T15:03:12.931908Z"}],"nvd":[{"id":"CVE-2025-53774","description":"Microsoft 365 Copilot BizChat Information Disclosure Vulnerability","status":"published","published":"2025-08-07T21:15:28.197Z","modified":"2026-06-17T09:38:52.163Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"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":"primary"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T14:11:22.319351Z"}]}}