What’s Vulnerable › Vulnerabilities

CVE-2022-23267: .NET and Visual Studio Denial of Service Vulnerability

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-05-10 · updated 2026-06-17

Description

.NET and Visual Studio Denial of Service Vulnerability

Affected products

• Fedoraproject Fedora: 34, 35, 36
• Microsoft .NET: 5.0, 6.0.0
• Microsoft Corporation .NET Core: 3.1
• Microsoft Powershell: from 7.0 before 7.0.11; from 7.2 before 7.2.4 — fixed in 7.0.11, 7.2.4
• Microsoft Visual Studio 2019: from 16.0 before 16.9.21; from 16.10 before 16.11.14 — fixed in 16.11.14, 16.9.21
• Microsoft Visual Studio 2022 version 17.14: 17.0, 17.1
• Microsoft .NET 5.0: from 5.0.0 before 5.0.17 — fixed in 5.0.17
• Microsoft .NET 6.0: from 6.0.0 before 6.0.5 — fixed in 6.0.5
• Microsoft .NET Core 3.1: from 3.1 before 3.1.25 — fixed in 3.1.25
• Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10): from 16.11.0 before 16.11.14 — fixed in 16.11.14
• Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8): from 15.0.0 before 16.9.21 — fixed in 16.9.21
• Microsoft Visual Studio 2022 version 17.0: from 17.0.0 before 17.0.10 — fixed in 17.0.10
• Microsoft Visual Studio 2022 version 17.1: from 17.0.0 before 17.1.7 — fixed in 17.1.7
• Microsoft PowerShell 7.0: from 7.0.0 before 7.0.11 — fixed in 7.0.11
• Microsoft PowerShell 7.2: from 7.2.0 before 7.2.4 — fixed in 7.2.4
• Microsoft Visual Studio 2019 for Mac version 8.10: from 8.1.0 before 8.10.24 — fixed in 8.10.24
• Microsoft Visual Studio 2022 for Mac version 17.0: from 17.0.0 before 17.0.3 — fixed in 17.0.3

How to fix

Upgrade to a fixed version: Microsoft Powershell 7.0.11, 7.2.4; Microsoft Visual Studio 2019 16.11.14, 16.9.21; Microsoft .NET 5.0 5.0.17; Microsoft .NET 6.0 6.0.5; Microsoft .NET Core 3.1 3.1.25; Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10) 16.11.14; Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8) 16.9.21; Microsoft Visual Studio 2022 version 17.0 17.0.10; Microsoft Visual Studio 2022 version 17.1 17.1.7; Microsoft PowerShell 7.0 7.0.11; Microsoft PowerShell 7.2 7.2.4; Microsoft Visual Studio 2019 for Mac version 8.10 8.10.24. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-23267
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GNXQL7EZORGU4PZCPJ5EPQ4P7IEY3ZZO/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IBYSBUDJYQ76HK4TULXVIIPCKK2U6WDB/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W5FPEQ6BTYRGTS6IYCDTZW6YF5HLQ3BY/
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-23267

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