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Findings

CVE-2026-40369

Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

Published May 12, 2026 · updated Jun 26, 2026 · microsoft windows 11 24h2

Heap-based buffer overflow in Windows Kernel 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. May 12, 2026 · NIST NVD

    Detected

    Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

  2. Jun 26, 2026 · NIST NVD

    Updated

    Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

Affected

  • cpe microsoft/windows 11 24h2version unspecified
  • cpe microsoft/windows 11 25h2version unspecified
  • cpe microsoft/windows 11 26h1version unspecified
  • cpe microsoft/windows server 2025version unspecified

Sources

  • CVE.orgVulnerability recordCVE-2026-40369

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2026-40369

    Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

    nvd.nist.gov

References