{"id":"CVE-2026-65801","aliases":["EUVD-2026-63689","GHSA-w5cc-jcwc-q4f8"],"status":"published","title":"Microsoft Exchange Online Elevation of Privilege Vulnerability","description":"Server-side request forgery (ssrf) in Microsoft Exchange Online allows an unauthorized attacker to elevate privileges over a network.","severity":{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/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":"2026-11-09","score":0.00901,"percentile":0.59952,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-918"],"published":"2026-08-20T21:43:10Z","modified":"2026-10-30T17:19:23Z","products":[{"vendor":"","product":"microsoft exchange online"},{"vendor":"microsoft","product":"exchange_online"},{"vendor":"microsoft","product":"microsoft exchange online"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65801","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65801"},{"url":"https://github.com/advisories/GHSA-w5cc-jcwc-q4f8"}],"sources":{"cve":[{"id":"CVE-2026-65801","title":"Microsoft Exchange Online Elevation of Privilege Vulnerability","description":"Server-side request forgery (ssrf) in Microsoft Exchange Online allows an unauthorized attacker to elevate privileges over a network.","status":"published","published":"2026-08-20T21:43:10.52Z","modified":"2026-10-30T17:19:23.159Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical","assessor":"cna"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T13:37:13.934727Z"}],"euvd":[{"id":"EUVD-2026-63689","description":"Server-side request forgery (ssrf) in Microsoft Exchange Online allows an unauthorized attacker to elevate privileges over a network.","status":"published","published":"2026-08-20T21:43:10Z","modified":"2026-10-30T17:19:23Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical"}],"updated_at":"2026-11-02T16:59:05.130363Z"}],"ghsa":[{"id":"GHSA-w5cc-jcwc-q4f8","title":"Server-side request forgery (ssrf) in Microsoft Exchange Online allows an unauthorized attacker...","description":"Server-side request forgery (ssrf) in Microsoft Exchange Online allows an unauthorized attacker to elevate privileges over a network.","status":"published","published":"2026-08-21T00:31:21Z","modified":"2026-08-21T00:31:30Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T15:10:48.883791Z"}],"nvd":[{"id":"CVE-2026-65801","description":"Server-side request forgery (ssrf) in Microsoft Exchange Online allows an unauthorized attacker to elevate privileges over a network.","status":"published","published":"2026-08-20T22:17:54.897Z","modified":"2026-10-18T20:10:00.11Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:12:40.302911Z"}]}}