CVE-2026-56181: CWE-346: Origin Validation Error in Microsoft Windows 11 Version 24H2
Origin validation error in Windows Network Address Translation (NAT) allows an unauthorized attacker to perform spoofing over an adjacent network.
CVE-2026-56181: CWE-346: Origin Validation Error in Microsoft Windows 11 Version 24H2
Description
Origin validation error in Windows Network Address Translation (NAT) allows an unauthorized attacker to perform spoofing over an adjacent network.
CVSS v3.1
Score 8.3high
Affected software
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-19T13:54:04.005Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56181","vendor":"Microsoft"}]
Threat ID: 6a5676b968715ace43f0ae3c
Added to database: 07/14/2026, 17:49:45 UTC
Last updated: 07/14/2026, 17:49:45 UTC
Views: 1
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