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Findings

CVE-2026-40406

Use after free in Windows TCP/IP allows an unauthorized attacker to disclose information over a network.

Published May 12, 2026 · updated Jun 17, 2026 · microsoft windows 10 1607

Use after free in Windows TCP/IP allows an unauthorized attacker to disclose information over a network.

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

    Use after free in Windows TCP/IP allows an unauthorized attacker to disclose information over a network.

  2. Jun 17, 2026 · NIST NVD

    Updated

    Use after free in Windows TCP/IP allows an unauthorized attacker to disclose information over a network.

Affected

  • cpe microsoft/windows 10 1607version unspecified
  • cpe microsoft/windows 10 1809version unspecified
  • cpe microsoft/windows 10 21h2version unspecified
  • cpe microsoft/windows 10 22h2version unspecified

Sources

  • CVE.orgVulnerability recordCVE-2026-40406

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2026-40406

    Use after free in Windows TCP/IP allows an unauthorized attacker to disclose information over a network.

    nvd.nist.gov

References