CVE-2026-41090

Microsoft Copilot Tampering Vulnerability

CVSS 9.3 CRITICALEPSS 0.4%CWE-77

Vexday Risk Score

28Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 9.3EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

22 May 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C

Affected products

Microsoft · Microsoft 365 Copilot for iOS

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41090