What is CVE-2026-42895?

CVE-2026-42895 is a security advisory published by Microsoft Security Response Center (MSRC) with Critical severity. Microsoft Copilot Tampering Vulnerability

Which CVE IDs does CVE-2026-42895 cover?

CVE-2026-42895 covers the following CVE IDs: CVE-2026-42895. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-42895?

CVE-2026-42895 has a CVSS v3 base score of 6.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-42895?

CVE-2026-42895 affects 1 product, including: Microsoft 365 Copilot.

CVE-2026-42895CriticalCVSS 6.5

Microsoft Copilot Tampering Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

June 19, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-42895 →

📋 Description

Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to perform tampering over a network.

🎯 Affected products1

Microsoft 365 Copilot

🔗 References (1)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42895