Findings

CVE-2026-50387

Stack-based buffer overflow in Windows GDI allows an authorized attacker to elevate privileges locally.

Published Jul 14, 2026 · updated Oct 14, 2026 · microsoft 365 copilot

Stack-based buffer overflow in Windows GDI allows an authorized attacker to elevate privileges locally.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 14, 2026 · NIST NVD

    Detected

    Stack-based buffer overflow in Windows GDI allows an authorized attacker to elevate privileges locally.

  2. Oct 14, 2026 · NIST NVD

    Updated

    Stack-based buffer overflow in Windows GDI allows an authorized attacker to elevate privileges locally.

Affected

  • cpe microsoft/365 copilotversion unspecified
  • cpe microsoft/microsoft 365version unspecified
  • cpe microsoft/office 2021version unspecified
  • cpe microsoft/office 2024version unspecified
  • cpe microsoft/windows 10 1607version unspecified
  • cpe microsoft/windows 10 1809version unspecified

Sources

  • CVE.orgVulnerability recordCVE-2026-50387

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-50387

    30-day exploitation probability 0.3%

    first.org
  • NIST NVDVulnerability recordCVE-2026-50387

    Stack-based buffer overflow in Windows GDI allows an authorized attacker to elevate privileges locally.

    nvd.nist.gov

References