CVE-2026-45497: high-severity vulnerability in Microsoft 365 Copilot
Microsoft M365 Copilot Remote Code Execution Vulnerability
Published · Updated
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.7epss 0.6%
exploitation probability
0.6%top 52% of all CVEs
observed exploitation
nono source reports it
Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an authorized attacker to execute code over a network.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L/E:U/RL:O/RC:C
Affected products
Microsoft · Microsoft 365 CopilotRelated CVEs — Microsoft 365 Copilot
In the same product, most dangerous first.
CVE-2025-32711CRITICALM365 Copilot Information Disclosure VulnerabilityEPSS 8.0%CVE-2026-50517CRITICALMicrosoft M365 Copilot Remote Code Execution VulnerabilityEPSS 1.7%CVE-2026-54130CRITICALM365 Copilot Information Disclosure VulnerabilityEPSS 1.1%CVE-2026-24307CRITICALM365 Copilot Information Disclosure VulnerabilityEPSS 0.9%CVE-2026-42824MEDIUMM365 Copilot Information Disclosure VulnerabilityEPSS 0.9%CVE-2026-42827MEDIUMM365 Copilot Information Disclosure VulnerabilityEPSS 0.9%