Is CVE-2026-41090 actively exploited?

No active exploitation of CVE-2026-41090 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-41090 be exploited remotely?

Yes. CVE-2026-41090 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-41090?

CVE-2026-41090 has a CVSS score of 9.3 (CRITICAL).

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CRITICAL

CVE-2026-41090

CWE-77Published: May 22, 2026· Updated: May 27, 2026

9.3

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:14.9th

Official 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.

NVD Source

Technical Analysis

CVE-2026-41090 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 9.3.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.