CRITICAL 9.3 Microsoft
CVE-2026-41090
Microsoft Copilot Tampering Vulnerability
Microsoft Security Update 2026-May: Microsoft Copilot Tampering Vulnerability
Affected Products
- Microsoft 365 Copilot for iOS
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41090
- https://nvd.nist.gov/vuln/detail/CVE-2026-41090
This critical severity vulnerability with a CVSS score of 9.3 was published on 2026-05-12 via Microsoft. Affected: Microsoft 365 Copilot for iOS.
Risk Timeline
CVE Disclosed2026-05-12 · 83 days ago
Remediation Resources
Official Advisory
msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41090NVD / MITRE
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