{"id":"CVE-2026-59118","aliases":["EUVD-2026-54314","GHSA-jc2g-2frr-2pxq"],"status":"published","title":"Copilot Cowork Elevation of Privilege Vulnerability","description":"Improper authorization in Copilot Cowork allows an unauthorized attacker to elevate privileges over a network.","severity":{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00716,"percentile":0.54277,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-285"],"published":"2026-08-06T22:37:37Z","modified":"2026-11-10T22:01:13Z","products":[{"vendor":"microsoft","product":"copilot cowork"},{"vendor":"microsoft","product":"power_apps"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-59118","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59118"},{"url":"https://github.com/advisories/GHSA-jc2g-2frr-2pxq"}],"sources":{"cve":[{"id":"CVE-2026-59118","title":"Copilot Cowork Elevation of Privilege Vulnerability","description":"Improper authorization in Copilot Cowork allows an unauthorized attacker to elevate privileges over a network.","status":"published","published":"2026-08-06T22:37:37.174Z","modified":"2026-11-10T22:01:13.955Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C","level":"critical","assessor":"cna"}],"cwes":["CWE-285"],"updated_at":"2026-11-10T23:49:29.755102Z"}],"euvd":[{"id":"EUVD-2026-54314","description":"Improper authorization in Copilot Cowork allows an unauthorized attacker to elevate privileges over a network.","status":"published","published":"2026-08-06T22:37:37Z","modified":"2026-11-10T22:01:13Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C","level":"critical"}],"updated_at":"2026-11-10T23:24:16.163953Z"}],"ghsa":[{"id":"GHSA-jc2g-2frr-2pxq","title":"Improper authorization in Microsoft Power Apps allows an unauthorized attacker to elevate...","description":"Improper authorization in Microsoft Power Apps allows an unauthorized attacker to elevate privileges over a network.","status":"published","published":"2026-08-07T00:31:23Z","modified":"2026-08-07T00:31:27Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N","level":"critical"}],"cwes":["CWE-285"],"updated_at":"2026-11-02T15:10:10.387883Z"}],"nvd":[{"id":"CVE-2026-59118","description":"Improper authorization in Copilot Cowork allows an unauthorized attacker to elevate privileges over a network.","status":"published","published":"2026-08-07T00:16:33.923Z","modified":"2026-10-24T16:10:00.153Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N","level":"critical","assessor":"secondary"}],"cwes":["CWE-285"],"updated_at":"2026-11-02T14:12:35.386166Z"}]}}