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CVE-2026-77505

Опубликовано: 08 сент. 2026
Источник: msrc
CVSS3: 8.1
EPSS Низкий

Описание

Windows DNS Server Remote Code Execution Vulnerability

Use after free in DNS Server 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?

Successful exploitation of this vulnerability requires an attacker to win a race condition.

How could an attacker exploit this vulnerability?

An unauthenticated attacker could send DNS queries to a Windows DNS Server that is configured with a server-level DNS plug-in, attempting to win a timing-dependent race condition in the server's record-handling logic. Successful exploitation could allow the attacker to execute code on the DNS server with SYSTEM privileges. Network access is required; authentication and user interaction are not required.

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: 43%
0.00519
Низкий

8.1 High

CVSS3

Связанные уязвимости

CVSS3: 8.1
nvd
7 дней назад

Use after free in DNS Server allows an unauthorized attacker to execute code over a network.

CVSS3: 8.1
github
7 дней назад

Use after free in DNS Server allows an unauthorized attacker to execute code over a network.

EPSS

Процентиль: 43%
0.00519
Низкий

8.1 High

CVSS3