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CVE-2026-20849

Опубликовано: 13 янв. 2026
Источник: msrc
CVSS3: 7.5
EPSS Низкий

Описание

Windows Kerberos Elevation of Privilege Vulnerability

Reliance on untrusted inputs in a security decision in Windows Kerberos allows an authorized attacker to elevate privileges over a network.

FAQ

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

A high attack complexity means the attacker must be able to perform a precise machine‑in‑the‑middle modification of Kerberos traffic, which requires specific network positioning and conditions to succeed.

What privileges could be gained by an attacker who successfully exploited this vulnerability?

An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.

Обновления

ПродуктСтатьяОбновление
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
Windows Server 2012
Windows Server 2012 (Server Core installation)
Windows Server 2012 R2
Windows Server 2012 R2 (Server Core installation)

Показывать по

Возможность эксплуатации

Publicly Disclosed

No

Exploited

No

Latest Software Release

Exploitation Unlikely

EPSS

Процентиль: 26%
0.00093
Низкий

7.5 High

CVSS3

Связанные уязвимости

CVSS3: 7.5
nvd
21 день назад

Reliance on untrusted inputs in a security decision in Windows Kerberos allows an authorized attacker to elevate privileges over a network.

CVSS3: 7.5
github
21 день назад

Reliance on untrusted inputs in a security decision in Windows Kerberos allows an authorized attacker to elevate privileges over a network.

CVSS3: 7.5
fstec
22 дня назад

Уязвимость реализации протокола Kerberos операционных систем Windows, позволяющая нарушителю повысить свои привилегии

EPSS

Процентиль: 26%
0.00093
Низкий

7.5 High

CVSS3