CVE-2026-45497

highCVSS 7.7covered by 1 sourcefirst seen 2026-06-09

Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an authorized attacker to execute code over a network.

CSIRTS triage

What: An authorized attacker can execute code over a network due to improper neutralization of special elements used in a command.
Who is affected: Users of Microsoft M365 Copilot are affected.
Urgency: Remediation is high urgency due to the potential for remote code execution and the severity of the vulnerability.
Action: Update to the latest version of M365 Copilot.

AI-assisted analysis generated from the source advisory — verify against the original.

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Exploitation outlook

Low exploitation risk0.45% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 36% of all EPSS-scored CVEs.

Advisory coverage (1)

highCVE-2026-45497: Microsoft M365 Copilot Remote Code Execution Vulnerabilitymsrc · 2026-06-09

External references

NVD record for CVE-2026-45497

CVE.org record

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