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CVSS 9.9 CRITICAL Vulnerability

CVE-2026-50517: CVE-2026-50517 - Microsoft M365 Copilot Remote Code Execution Vulnerability

CVE ID : CVE-2026-50517 Published : July 24, 2026, 1:17 a.m. | 2hours, 4minutes ago Description : Deserialization of untrusted data in M365 Copilot allows an authorized attacker to execute code over a network. Severity:…

9.9CVSS Score
CRITICALSeverity
NOCISA KEV
VulnerabilityImpact Type

📋 Vulnerability Details

CVE IDCVE-2026-50517
VendorUnknown Vendor
Affected ProductUnknown Product
Vulnerability TypeVulnerability
CVSS Score9.9 (CRITICAL)
Actively Exploited❌ No known exploitation
Patch StatusPending Vendor Disclosure
Reported ByCYBERDUDEBIVASH SENTINEL APEX Intelligence (via sentinel_apex)

🔬 Technical Analysis

CVE ID : CVE-2026-50517

Published : July 24, 2026, 1:17 a.m. | 2hours, 4minutes ago

Description : Deserialization of untrusted data in M365 Copilot allows an authorized attacker to execute code over a network.

Severity: 9.9 | CRITICAL

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