CVSS 3.1
8.3 highCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:HCVE-2026-56181
High (8.3) in microsoft. EPSS 0.3% chance of exploitation in the next 30 days.
Origin validation error in Windows Network Address Translation (NAT) allows an unauthorized attacker to perform spoofing over an adjacent network.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 20% of CVEs (scores of 2026-10-31)
- CWE
- CWE-346
- Published
- Modified
- Record from
- the NVD, synced
Affected
- microsoft:windows_11_24h2
- microsoft:windows_11_25h2
- microsoft:windows_11_26h1
- microsoft:windows_server_2025