CRITICAL 9.9 Microsoft
CVE-2026-50517
Microsoft M365 Copilot Remote Code Execution Vulnerability
Microsoft Security Update 2026-Jul: Microsoft M365 Copilot Remote Code Execution Vulnerability
Affected Products
- Microsoft 365 Copilot
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50517
- https://nvd.nist.gov/vuln/detail/CVE-2026-50517
This critical severity vulnerability with a CVSS score of 9.9 was published on 2026-07-14 via Microsoft. Affected: Microsoft 365 Copilot.
Risk Timeline
CVE Disclosed2026-07-14 · 20 days ago
Remediation Resources
Official Advisory
msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50517NVD / MITRE
nvd.nist.gov/vuln/detail/CVE-2026-50517Related Vulnerabilities
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|---|---|---|---|
| CVE-2026-56191 | Microsoft Exchange Online Tampering Vulnerability | CRITICAL | 10.0 |
| CVE-2026-57106 | Data Quality Elevation of Privilege Vulnerability | CRITICAL | 10.0 |
| CVE-2026-33819 | Microsoft Bing Remote Code Execution Vulnerability | CRITICAL | 10.0 |
| CVE-2026-32186 | Microsoft Bing Elevation of Privilege Vulnerability | CRITICAL | 10.0 |
| CVE-2026-35431 | Microsoft Entra ID Entitlement Management Spoofing Vulnerability | CRITICAL | 10.0 |
| CVE-2026-23652 | Microsoft Power Pages Remote Code Execution Vulnerability | CRITICAL | 10.0 |
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