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CVE-2026-45466

Опубликовано: 09 июн. 2026
Источник: msrc
CVSS3: 3.3
EPSS Низкий

Описание

Microsoft Word Information Disclosure Vulnerability

Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

FAQ

What type of information could be disclosed by this vulnerability?

An attacker who successfully exploited this vulnerability could potentially read small portions of heap memory.

According to the CVSS metrics, successful exploitation of this vulnerability could lead to some loss of confidentiality (C:L),but lead to no loss of availability (A:N) and integrity (I:N)? What does that mean for this vulnerability?

An attacker who successfully exploited the vulnerability could view some sensitive information (Confidentiality) but not all resources within the impacted component may be divulged to the attacker. The attacker cannot make changes to disclosed information (Integrity) or limit access to the resource (Availability).

According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?

An attacker must send a user a malicious Office file and convince them to open it.

Is the Preview Pane an attack vector for this vulnerability?

No, the Preview Pane is not an attack vector.

Are the updates for Microsoft Office LTSC for Mac 2021 and 2024 currently available?

Yes. As of June 16, 2025, the security update for Microsoft Office LTSC for Mac 2021, 2024 and Microsoft Office 365 for Mac are available. Customers running Microsoft Office LTSC for Mac 2021, 2024 and Microsoft Office 365 for Mac should ensure the update is installed to be protected from this vulnerability.

Обновления

ПродуктСтатьяОбновление
Microsoft 365 Apps for Enterprise for 32-bit Systems
-
Microsoft 365 Apps for Enterprise for 64-bit Systems
-
Microsoft Office LTSC for Mac 2021
Microsoft Office LTSC 2021 for 64-bit editions
-
Microsoft Office LTSC 2021 for 32-bit editions
-
Microsoft Office LTSC 2024 for 32-bit editions
-
Microsoft Office LTSC 2024 for 64-bit editions
-
Microsoft Office LTSC for Mac 2024
Microsoft Office 365 for Mac

Показывать по

Возможность эксплуатации

Publicly Disclosed

No

Exploited

No

Latest Software Release

Exploitation Unlikely

EPSS

Процентиль: 30%
0.00371
Низкий

3.3 Low

CVSS3

Связанные уязвимости

CVSS3: 3.3
nvd
около 2 месяцев назад

Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

CVSS3: 3.3
github
около 2 месяцев назад

Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

CVSS3: 3.3
fstec
около 2 месяцев назад

Уязвимость пакетов программ Microsoft Office и 365 Apps for Enterprise, связанная с переполнением буфера в динамической памяти, позволяющая нарушителю раскрыть защищаемую информацию

EPSS

Процентиль: 30%
0.00371
Низкий

3.3 Low

CVSS3