What’s Vulnerable › Vulnerabilities

CVE-2022-26832: .NET Framework Denial of Service Vulnerability

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-04-15 · updated 2026-06-17

Description

.NET Framework Denial of Service Vulnerability

Affected products

• Microsoft .NET Framework: 2.0-sp2, 3.0-sp2, 3.5, 4.7.2, 4.8, 3.5.1 (+6)
• Microsoft .NET Framework 2.0 Service Pack 2: from 2.0.0 before 2.0.50727.8962 — fixed in 2.0.50727.8962
• Microsoft .NET Framework 3.0 Service Pack 2: from 3.0.0 before 2.0.50727.8962 — fixed in 2.0.50727.8962
• Microsoft .NET Framework 3.5: from 3.5.0 before publication — fixed in publication
• Microsoft .NET Framework 3.5.1: from 3.5.0 before 6.1.50727.8962 — fixed in 6.1.50727.8962
• Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2: from 3.0.0.0 before 10.0.14393.5066 — fixed in 10.0.14393.5066
• Microsoft .NET Framework 3.5 AND 4.7.2: from 4.7.0 before 4.7.3930.02 — fixed in 4.7.3930.02
• Microsoft .NET Framework 3.5 AND 4.8: from 4.8.0 before 4.8.4494.03 — fixed in 4.8.4494.03
• Microsoft .NET Framework 4.5.2: from 4.0.0.0 before 4.0.52732.36732 — fixed in 4.0.52732.36732
• Microsoft .NET Framework 4.6: from 4.0.0.0 before 4.0.52732.36732 — fixed in 4.0.52732.36732
• Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2: from 4.0.0.0 before 4.7.03930.02 — fixed in 4.7.03930.02
• Microsoft .NET Framework 4.8: from 4.8.0 before 4.8.04494.03 — fixed in 4.8.04494.03

How to fix

Upgrade to a fixed version: Microsoft .NET Framework 2.0 Service Pack 2 2.0.50727.8962; Microsoft .NET Framework 3.0 Service Pack 2 2.0.50727.8962; Microsoft .NET Framework 3.5 publication; Microsoft .NET Framework 3.5.1 6.1.50727.8962; Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 10.0.14393.5066; Microsoft .NET Framework 3.5 AND 4.7.2 4.7.3930.02; Microsoft .NET Framework 3.5 AND 4.8 4.8.4494.03; Microsoft .NET Framework 4.5.2 4.0.52732.36732; Microsoft .NET Framework 4.6 4.0.52732.36732; Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 4.7.03930.02; Microsoft .NET Framework 4.8 4.8.04494.03. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-26832
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-26832

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