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 · 129 days ago
Remediation Resources
Official Advisory
msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41090NVD / MITRE
nvd.nist.gov/vuln/detail/CVE-2026-41090Related Vulnerabilities
| CVE | Title | Severity | CVSS |
|---|---|---|---|
| CVE-2026-83711 | Microsoft Azure Active Directory B2C Elevation of Privilege Vulnerability | CRITICAL | 10.0 |
| CVE-2026-63508 | Microsoft Planetary Computer Pro Elevation of Privilege Vulnerability | CRITICAL | 10.0 |
| CVE-2026-65667 | Microsoft Teams Elevation of Privilege Vulnerability | CRITICAL | 10.0 |
| CVE-2026-65801 | Microsoft Exchange Online Elevation of Privilege Vulnerability | CRITICAL | 10.0 |
| CVE-2026-69836 | Microsoft Entra ID Remote Code Execution Vulnerability | CRITICAL | 10.0 |
| CVE-2026-32186 | Microsoft Bing Elevation of Privilege Vulnerability | CRITICAL | 10.0 |
vulnfeed aggregates 14156 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.