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CVE-2026-56181

Опубликовано: 14 июл. 2026
Источник: msrc
CVSS3: 8.3
EPSS Низкий

Описание

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.

FAQ

According to the CVSS metric, the attack vector is adjacent (AV:A). What does that mean for this vulnerability?

This vulnerability's attack is limited at the protocol level to a logically adjacent topology. This means it cannot simply be done across the internet, but instead needs something specific tied to the target. Good examples would include the same shared physical network (such as Bluetooth or IEEE 802.11), logical network (local IP subnet), or from within a secure or otherwise limited administrative domain (MPLS, secure VPN to an administrative network zone). This is common to many attacks that require machine-in-the-middle (MITM) type setups or that rely on initially gaining a foothold in another environment.

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?

The attacker must inject themselves into the logical network path between the target and the resource requested by the victim to read or modify network communications. This is called a machine-in-the-middle (MITM) attack.

Обновления

ПродуктСтатьяОбновление
Windows 11 Version 24H2 for ARM64-based Systems
Windows 11 Version 24H2 for x64-based Systems
Windows Server 2025
Windows Server 2025 (Server Core installation)
Windows 11 Version 25H2 for ARM64-based Systems
Windows 11 Version 25H2 for x64-based Systems
Windows 11 version 26H1 for x64-based Systems
Windows 11 Version 26H1 for ARM64-based Systems

Показывать по

Возможность эксплуатации

Publicly Disclosed

No

Exploited

No

Latest Software Release

Exploitation Less Likely

EPSS

Процентиль: 15%
0.00237
Низкий

8.3 High

CVSS3

Связанные уязвимости

CVSS3: 8.3
nvd
16 дней назад

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

CVSS3: 8.3
github
16 дней назад

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

EPSS

Процентиль: 15%
0.00237
Низкий

8.3 High

CVSS3