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CVE-2026-40420

Опубликовано: 12 мая 2026
Источник: msrc
CVSS3: 8.8
EPSS Низкий

Описание

Microsoft Office Click-To-Run Elevation of Privilege Vulnerability

Use after free in Microsoft Office allows an authorized attacker to elevate privileges locally.

FAQ

Is the Preview Pane an attack vector for this vulnerability?

No, the Preview Pane is not an attack vector.

According to the CVSS metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability?

This vulnerability could lead to a browser sandbox escape.

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

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

Возможность эксплуатации

Publicly Disclosed

No

Exploited

No

Latest Software Release

Exploitation Less Likely

EPSS

Процентиль: 12%
0.00212
Низкий

8.8 High

CVSS3

Связанные уязвимости

CVSS3: 8.8
nvd
3 месяца назад

Use after free in Microsoft Office allows an authorized attacker to elevate privileges locally.

CVSS3: 8.8
github
3 месяца назад

Improper access control in Microsoft Office Click-To-Run allows an authorized attacker to elevate privileges locally.

CVSS3: 8.8
fstec
3 месяца назад

Уязвимость технологии Click-to-Run (C2R) пакетов программ Microsoft Office и Office 365, позволяющая нарушителю повысить свои привилегии

EPSS

Процентиль: 12%
0.00212
Низкий

8.8 High

CVSS3