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CVE-2026-121680

Опубликовано: 10 нояб. 2026
Источник: msrc
CVSS3: 7.5

Описание

Windows NTLM Spoofing Vulnerability

Exposure of sensitive information to an unauthorized actor in Windows NTLM allows an unauthorized attacker to perform spoofing over a network.

FAQ

According to the CVSS metrics, successful exploitation of this vulnerability could lead to major loss of confidentiality (C:H). What does that mean for this vulnerability?

This vulnerability discloses a user's NTLMv2 hash to the attacker who could use this to authenticate as the user.

How could an attacker exploit this vulnerability?

External attackers could send specially crafted emails that will cause a connection from the victim to an untrusted location of attackers' control. This will leak the Net-NTLMv2 hash of the victim to the untrusted network which an attacker can then relay to another service and authenticate as the victim.

Обновления

ПродуктСтатьяОбновление
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
Windows Server 2019
Windows Server 2019 (Server Core installation)
Windows Server 2022
Windows Server 2022 (Server Core installation)

Показывать по

Возможность эксплуатации

Publicly Disclosed

No

Exploited

No

Latest Software Release

Exploitation Less Likely

7.5 High

CVSS3

Связанные уязвимости

CVSS3: 7.5
nvd
2 дня назад

Exposure of sensitive information to an unauthorized actor in Windows NTLM allows an unauthorized attacker to perform spoofing over a network.

CVSS3: 7.5
github
2 дня назад

Exposure of sensitive information to an unauthorized actor in Windows NTLM allows an unauthorized attacker to perform spoofing over a network.

7.5 High

CVSS3