{"data":{"id":"1ac850cf-0acd-4c53-ae13-ebf2b18674c0","title":"CVE-2026-41100: Improper access control in M365 Copilot allows an authorized attacker to perform spoofing locally.","summary":"CVE-2026-41100 is an improper access control flaw (CWE-284) in M365 Copilot. The source states that an authorized attacker can perform spoofing locally. NVD had not yet provided an assessment when the record was published on 05/12/2026.","solution":"N/A -- no mitigation discussed in source.","labels":["security"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-41100","publishedAt":"2026-05-12T18:17:21.507Z","cveId":"CVE-2026-41100","cweIds":["CWE-284"],"cvssScore":"4.4","cvssSeverity":"medium","severity":"medium","attackType":[],"issueType":"vulnerability","affectedPackages":null,"affectedPackageNames":null,"affectedPackageRefs":null,"affectedVendors":["Microsoft"],"affectedVendorsRaw":["M365 Copilot"],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":"M365 Copilot improper access control allows local spoofing","headlinePromptVersion":"h1","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","attackVector":"local","attackComplexity":"low","privilegesRequired":"low","userInteraction":"none","exploitMaturity":"unknown","epssScore":0.00256,"epssCheckedAt":"2026-10-14T18:06:00.492Z","kevDateAdded":null,"advisoryAliases":["GHSA-6gm9-cppw-hvx5"],"affectedPackagesSource":null,"affectedPackagesCheckedAt":"2026-10-10T03:48:26.977Z","patchAvailable":null,"disclosureDate":"2026-05-12T18:17:21.507Z","capecIds":null,"crossRefCount":0,"attackSophistication":"moderate","impactType":["integrity"],"aiComponentTargeted":"plugin","llmSpecific":true,"classifierConfidence":0.85,"researchCategory":null,"atlasIds":null}}