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CVE-2026-45484

Опубликовано: 09 июн. 2026
Источник: msrc
CVSS3: 8.8
EPSS Низкий

Описание

Microsoft SharePoint Elevation of Privilege Vulnerability

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.

FAQ

How could an attacker exploit the vulnerability?

An authenticated attacker with access to the domain could perform remote code execution on the SharePoint server to elevate themselves to SharePoint admin.

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

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

I am running SharePoint Server 2016. Do the updates for SharePoint Enterprise Server 2016 also apply to the version I am running?

Yes. The same KB number applies to both SharePoint Server 2016 and SharePoint Enterprise Server 2016. Customers running either version should install the security update to be protected from this vulnerability.

Обновления

ПродуктСтатьяОбновление
Microsoft SharePoint Enterprise Server 2016
Microsoft SharePoint Server 2019
Microsoft SharePoint Server Subscription Edition

Показывать по

Возможность эксплуатации

Publicly Disclosed

No

Exploited

No

Latest Software Release

Exploitation Less Likely

EPSS

Процентиль: 78%
0.01982
Низкий

8.8 High

CVSS3

Связанные уязвимости

CVSS3: 8.8
nvd
около 2 месяцев назад

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.

CVSS3: 8.8
github
около 2 месяцев назад

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.

CVSS3: 8.8
fstec
около 2 месяцев назад

Уязвимость пакетов программ Microsoft SharePoint Server и SharePoint Enterprise Server, связанная с недостатками механизма десериализации, позволяющая нарушителю повысить свои привилегии

EPSS

Процентиль: 78%
0.01982
Низкий

8.8 High

CVSS3