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CVE-2026-56179

Origin validation error in Windows Network Address Translation (NAT) allows an unauthorized attacker to perform spoofing over an adjacent network.

Weakness

Origin validation error in Windows Network Address Translation (NAT) allows an unauthorized attacker to perform spoofing over an adjacent network.

Affected products

  • microsoft windows_11_24h2
  • microsoft windows_11_25h2
  • microsoft windows_11_26h1
  • microsoft windows_server_2025

References

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