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Windows Network Address Translation (NAT) Spoofing Vulnerability

🗓️ 11 Aug 2026 14:00:00Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com👁 25 Views

Windows NAT origin validation error enables spoofing by unauthorized attacker over adjacent network.

Related
Detection
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attackerkb
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nvd
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ptsecurity
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PT-2026-70393
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nessus
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KB5120233: Windows Server 2025 Security Update (August 2026)
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KB5121000: Windows 11 Version 26H1 Security Update (August 2026)
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Rows per page
Vulners
Node
OR
microsoftwindows_11_26h1Range<10.0.28000.2704x64
microsoftwindows_11_26h1Range<10.0.28000.2704x64
microsoftwindows_server_2025Range<10.0.26100.33296
microsoftwindows_server_2025Range<10.0.26100.33222
microsoftwindows_11_24h2Range<10.0.26100.9168x64
microsoftwindows_11_24h2Range<10.0.26100.9106x64
microsoftwindows_11_24h2Range<10.0.26100.9168x64
microsoftwindows_11_24h2Range<10.0.26100.9106x64
microsoftwindows_11_25h2Range<10.0.26200.9168x64
microsoftwindows_11_25h2Range<10.0.26200.9106x64
microsoftwindows_11_25h2Range<10.0.26200.9168x64
microsoftwindows_11_25h2Range<10.0.26200.9106x64
microsoftwindows_server_2025Range<10.0.26100.33296
microsoftwindows_server_2025Range<10.0.26100.33222

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11 Aug 2026 14:00Current
5.3Medium risk
Vulners AI Score5.3
CVSS 3.18.3
EPSS0.00234
SSVC
25