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CVE-2026-20856

Опубликовано: 13 янв. 2026
Источник: msrc
CVSS3: 8.1
EPSS Низкий

Описание

Windows Server Update Service (WSUS) Remote Code Execution Vulnerability

Improper input validation in Windows Server Update Service allows an unauthorized attacker to execute code over a network.

FAQ

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 Server 2012
Windows Server 2012 (Server Core installation)
Windows Server 2012 R2
Windows Server 2012 R2 (Server Core installation)
Windows Server 2016
Windows 10 Version 1607 for 32-bit Systems
Windows 10 Version 1607 for x64-based Systems
Windows Server 2016 (Server Core installation)
Windows 10 Version 1809 for 32-bit Systems
Windows 10 Version 1809 for x64-based Systems

Показывать по

Возможность эксплуатации

Publicly Disclosed

No

Exploited

No

Latest Software Release

Exploitation Less Likely

EPSS

Процентиль: 41%
0.00192
Низкий

8.1 High

CVSS3

Связанные уязвимости

CVSS3: 8.1
nvd
21 день назад

Improper input validation in Windows Server Update Service allows an unauthorized attacker to execute code over a network.

CVSS3: 8.1
github
21 день назад

Improper input validation in Windows Server Update Service allows an unauthorized attacker to execute code over a network.

CVSS3: 8.1
fstec
22 дня назад

Уязвимость сервера обновлений Windows Server Update Services (WSUS) операционных систем Windows, позволяющая нарушителю выполнить произвольный код

EPSS

Процентиль: 41%
0.00192
Низкий

8.1 High

CVSS3