{"id":"CVE-2025-59249","aliases":["EUVD-2025-34376","GHSA-9x3p-h9v5-qfph"],"status":"published","title":"Microsoft Exchange Server Elevation of Privilege Vulnerability","description":"Weak authentication in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00845,"percentile":0.58296,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1390"],"published":"2025-10-14T17:00:42Z","modified":"2026-10-18T21:10:00Z","products":[{"vendor":"microsoft","product":"exchange_server"},{"vendor":"microsoft","product":"exchange_server_subscription_edition"},{"vendor":"microsoft","product":"microsoft exchange server 2016 cumulative update 23"},{"vendor":"microsoft","product":"microsoft exchange server 2019 cumulative update 14"},{"vendor":"microsoft","product":"microsoft exchange server 2019 cumulative update 15"},{"vendor":"microsoft","product":"microsoft exchange server subscription edition rtm"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59249","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-59249"},{"url":"https://github.com/advisories/GHSA-9x3p-h9v5-qfph"}],"sources":{"cve":[{"id":"CVE-2025-59249","title":"Microsoft Exchange Server Elevation of Privilege Vulnerability","description":"Weak authentication in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.","status":"published","published":"2025-10-14T17:00:42.051Z","modified":"2026-02-26T17:47:16.347Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-1390"],"updated_at":"2026-11-02T14:32:47.812946Z"}],"euvd":[{"id":"EUVD-2025-34376","description":"Weak authentication in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.","status":"published","published":"2025-10-14T17:00:42Z","modified":"2026-02-26T17:47:16Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T19:48:23.405029Z"}],"ghsa":[{"id":"GHSA-9x3p-h9v5-qfph","title":"Weak authentication in Microsoft Exchange Server allows an authorized attacker to elevate...","description":"Weak authentication in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.","status":"published","published":"2025-10-14T18:30:35Z","modified":"2025-10-14T18:30:36Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-1390"],"updated_at":"2026-11-02T15:03:57.996157Z"}],"nvd":[{"id":"CVE-2025-59249","description":"Weak authentication in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.","status":"published","published":"2025-10-14T17:16:07.07Z","modified":"2026-10-18T21:10:00.12Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-1390"],"updated_at":"2026-11-02T14:11:38.17237Z"}]}}