{"id":"CVE-2026-85887","title":"Incorrect permission assignment for critical resource in M365 Copilot allows an authorized attacker to disclose information over a network.","summary":"Incorrect permission assignment for critical resource in M365 Copilot allows an authorized attacker to disclose information over a network.","severity":"high","cvss":7.7,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","cwe":["CWE-732"],"vendor":"Microsoft","product":"Microsoft 365 Copilot","affected":["365_copilot -"],"published":"2026-09-18","updated":"2026-09-18","sourceUpdated":"2026-09-18T15:17:14.920","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-85887","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85887","label":"secure@microsoft.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-18T13:35:20.282568Z"},"epss":0.00476,"epssPercentile":0.40188,"ingestedAt":"2026-09-17T23:31:20.692Z","slug":"CVE-2026-85887","body":"## Overview\n\nIncorrect permission assignment for critical resource in M365 Copilot allows an authorized attacker to disclose information over a network.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":42.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}