{"id":"CVE-2026-77903","aliases":["EUVD-2026-82585","GHSA-7f9r-6785-2v6v"],"status":"published","title":"Microsoft Dataverse Elevation of Privilege Vulnerability","description":"Authentication bypass by spoofing in Microsoft Dataverse allows an unauthorized attacker to elevate privileges over a network.","severity":{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00372,"percentile":0.31595,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-290"],"published":"2026-09-17T22:55:54Z","modified":"2026-11-10T21:29:12Z","products":[{"vendor":"microsoft","product":"dataverse"},{"vendor":"microsoft","product":"microsoft dataverse"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77903","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77903"},{"url":"https://github.com/advisories/GHSA-7f9r-6785-2v6v"}],"sources":{"cve":[{"id":"CVE-2026-77903","title":"Microsoft Dataverse Elevation of Privilege Vulnerability","description":"Authentication bypass by spoofing in Microsoft Dataverse allows an unauthorized attacker to elevate privileges over a network.","status":"published","published":"2026-09-17T22:55:54.051Z","modified":"2026-11-10T21:29:12.871Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical","assessor":"cna"}],"cwes":["CWE-290"],"updated_at":"2026-11-10T22:48:53.557052Z"}],"euvd":[{"id":"EUVD-2026-82585","description":"Authentication bypass by spoofing in Microsoft Dataverse allows an unauthorized attacker to elevate privileges over a network.","status":"published","published":"2026-09-17T22:55:54Z","modified":"2026-11-10T21:29:12Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical"}],"updated_at":"2026-11-10T22:23:53.990018Z"}],"ghsa":[{"id":"GHSA-7f9r-6785-2v6v","title":"Authentication bypass by spoofing in Microsoft Dataverse allows an unauthorized attacker to...","description":"Authentication bypass by spoofing in Microsoft Dataverse allows an unauthorized attacker to elevate privileges over a network.","status":"published","published":"2026-09-18T00:31:09Z","modified":"2026-09-18T00:31:15Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-290"],"updated_at":"2026-11-02T15:12:08.779152Z"}],"nvd":[{"id":"CVE-2026-77903","description":"Authentication bypass by spoofing in Microsoft Dataverse allows an unauthorized attacker to elevate privileges over a network.","status":"published","published":"2026-09-17T23:18:44.993Z","modified":"2026-09-25T20:05:46.08Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-290"],"updated_at":"2026-11-02T14:12:49.70655Z"}]}}