Jul 2026: Windows Network Address Translation (NAT) Spoofing Vulnerability
CVE-2026-56181 Published on July 14, 2026
Windows Network Address Translation (NAT) Spoofing Vulnerability
Origin validation error in Windows Network Address Translation (NAT) allows an unauthorized attacker to perform spoofing over an adjacent network.
Weakness Type
Origin Validation Error
The software does not properly verify that the source of data or communication is valid.
Products Associated with CVE-2026-56181
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Affected Versions
Microsoft Windows 11 Version 24H2:- Version 10.0.26100.0 and below 10.0.26100.8875 is affected.
- Version 10.0.26200.0 and below 10.0.26100.8875 is affected.
- Version 10.0.28000.0 and below 10.0.28000.2525 is affected.
- Version 10.0.26100.0 and below 10.0.26100.33158 is affected.
- Version 10.0.26100.0 and below 10.0.26100.33158 is affected.