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CVE-2026-21218

Опубликовано: 10 фев. 2026
Источник: msrc
CVSS3: 7.5
EPSS Низкий

Описание

.NET Spoofing Vulnerability

Improper handling of missing special element in .NET allows an unauthorized attacker to perform spoofing over a network.

FAQ

According to the CVSS metric, the privileges required is none (PR:N). What does that mean for this vulnerability?

The score is based on no user account is needed to perform the attack.

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

An attacker who successfully exploited this vulnerability could bypass critical-header validation and the service may accept a message it should reject.

Обновления

ПродуктСтатьяОбновление
.NET 8.0 runtime installed on Windows
.NET 8.0 runtime installed on Linux
.NET 8.0 runtime installed on Mac OS
.NET 9.0 runtime installed on Linux
.NET 9.0 runtime installed on Mac OS
.NET 9.0 runtime installed on Windows
.NET 10.0 runtime installed on Windows
.NET 10.0 runtime installed on Mac OS
.NET 10.0 runtime installed on Linux

Показывать по

Возможность эксплуатации

Publicly Disclosed

No

Exploited

No

Latest Software Release

Exploitation Unlikely

EPSS

Процентиль: 63%
0.00997
Низкий

7.5 High

CVSS3

Связанные уязвимости

CVSS3: 7.5
ubuntu
9 месяцев назад

Improper handling of missing special element in .NET allows an unauthorized attacker to perform spoofing over a network.

CVSS3: 7.5
nvd
9 месяцев назад

Improper handling of missing special element in .NET allows an unauthorized attacker to perform spoofing over a network.

github
9 месяцев назад

Microsoft Security Advisory CVE-2026-21218 | .NET Security Feature Bypass Vulnerability

CVSS3: 7.5
fstec
9 месяцев назад

Уязвимость программной платформы .NET, связанная с некорректной обработкой отсутствующего специального элемента, позволяющая нарушителю проводить спуфинг-атаки

CVSS3: 7.5
redos
6 месяцев назад

Уязвимость dotnet10.0

EPSS

Процентиль: 63%
0.00997
Низкий

7.5 High

CVSS3