CVE-2026-56179
Windows Network Address Translation (NAT) Spoofing Vulnerability
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 10.0.26100.9168, 10.0.26200.9168, 10.0.28000.2704, 10.0.26100.33296
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
Origin validation error in Windows Network Address Translation (NAT) allows an unauthorized attacker to perform spoofing over an adjacent network.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Microsoft Windows 11 Version 24H2
From 10.0.26100.0 · fixed in 10.0.26100.9168
- Microsoft Windows 11 Version 25H2
From 10.0.26200.0 · fixed in 10.0.26200.9168
- Microsoft Windows 11 version 26H1
From 10.0.28000.0 · fixed in 10.0.28000.2704
- Microsoft Windows Server 2025
From 10.0.26100.0 · fixed in 10.0.26100.33296
- Microsoft Windows Server 2025 (Server Core installation)
From 10.0.26100.0 · fixed in 10.0.26100.33296