AI and data stack advisories

Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

MicrosoftCVE-2026-56179

Microsoft Windows: spoofing

Microsoft

CVE-2026-56179 · Published Aug 11, 2026 · updated Aug 13, 2026

High8.3
Fix: upgrade to 10.0.26100.9168 or later (4 fixed versions below)
Microsoft advisory

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

Affected versions

PackageAffectedFixed in
Windows 11 Version 24H2
Product
>= 10.0.26100.0, < 10.0.26100.916810.0.26100.9168
Windows 11 Version 25H2
Product
>= 10.0.26200.0, < 10.0.26200.916810.0.26200.9168
Windows 11 version 26H1
Product
>= 10.0.28000.0, < 10.0.28000.270410.0.28000.2704
Windows Server 2025
Product
>= 10.0.26100.0, < 10.0.26100.3329610.0.26100.33296
Windows Server 2025 (Server Core installation)
Product
>= 10.0.26100.0, < 10.0.26100.3329610.0.26100.33296
Details and references
CVSS 3.1
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-346

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