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CVE-2026-50387: 365 copilot vulnerability
CVE-2026-50387: high vulnerability affecting 365 copilot. Check CVSS, KEV status, business impact and recommended administrator actions.
- CVSS
- 7.8 HIGH
- EPSS
- 77.78%
- Known exploited
- not in KEV
- Product
- 365 copilot
What is known
Stack-based buffer overflow in Windows GDI allows an authorized attacker to elevate privileges locally.
Business impact
Successful exploitation of CVE-2026-50387, a high vulnerability (CVSS 7.8) affecting 365 copilot, may affect the confidentiality, integrity or availability of the vulnerable environment. The exact impact depends on the installed version, exposed interfaces and deployment configuration.
Recommended administrator action
Confirm whether 365 copilot is present and compare installed versions with the vendor advisory and NVD record. Apply the vendor patch or documented mitigation; until remediation is complete, reduce exposure of affected interfaces, review relevant logs and monitor for indicators of exploitation. DataHouse can support version verification, managed patching, network exposure reduction, log review and backup validation for dedicated, cloud and colocated environments.