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CVE-2026-85818

Опубликовано: 13 окт. 2026
Источник: msrc
CVSS3: 9
EPSS Низкий

Описание

Windows Schannel Spoofing Vulnerability

Improper verification of cryptographic signature in Windows Schannel allows an unauthorized attacker to perform spoofing 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 network attacker could establish concurrent resumed TLS connections and exploit a race condition to substitute a trusted client certificate without proving possession of its private key. Successful exploitation could allow the attacker to be authenticated as the certificate's identity. User interaction is not required.

Обновления

ПродуктСтатьяОбновление
Windows Server 2022
Windows Server 2022 (Server Core installation)
Windows 11 Version 23H2 for ARM64-based Systems
Windows 11 Version 23H2 for x64-based Systems
Windows 11 Version 24H2 for ARM64-based Systems
Windows 11 Version 24H2 for x64-based Systems
Windows Server 2025
Windows Server 2025 (Server Core installation)
Windows 11 Version 25H2 for ARM64-based Systems
Windows 11 Version 25H2 for x64-based Systems

Показывать по

Возможность эксплуатации

Publicly Disclosed

No

Exploited

No

Latest Software Release

Exploitation Unlikely

EPSS

Процентиль: 36%
0.00414
Низкий

9 Critical

CVSS3

Связанные уязвимости

CVSS3: 9
nvd
26 дней назад

Improper verification of cryptographic signature in Windows Schannel allows an unauthorized attacker to perform spoofing over a network.

CVSS3: 9
github
26 дней назад

Improper verification of cryptographic signature in Windows Schannel allows an unauthorized attacker to perform spoofing over a network.

EPSS

Процентиль: 36%
0.00414
Низкий

9 Critical

CVSS3