CVE-2023-36788: .NET Framework Remote Code Execution Vulnerability

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-09-12 · updated 2026-06-17

Description

.NET Framework Remote Code Execution Vulnerability

Affected products

Microsoft .NET Framework: 3.5.1, 3.5, 2.0-sp2, 3.0-sp2, 4.8.1, 4.8 (+1)
Microsoft .NET Framework 2.0 Service Pack 2: from 2.0.0 before 3.0.30729.8957 — fixed in 3.0.30729.8957
Microsoft .NET Framework 3.0 Service Pack 2: from 3.0.0 before 3.0.30729.8957 — fixed in 3.0.30729.8957
Microsoft .NET Framework 3.5: from 3.5.0 before 3.0.30729.8957 — fixed in 3.0.30729.8957
Microsoft .NET Framework 3.5.1: from 3.5.0 before 3.0.30729.8957 — fixed in 3.0.30729.8957
Microsoft .NET Framework 3.5 and 4.6.2: from 4.7.0 before 10.0.10240.20162 — fixed in 10.0.10240.20162
Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2: from 3.0.0.0 before 10.0.14393.6252 — fixed in 10.0.14393.6252
Microsoft .NET Framework 3.5 AND 4.7.2: from 4.7.0 before 4.7.04063.05 — fixed in 4.7.04063.05
Microsoft .NET Framework 3.5 AND 4.8: from 4.8.0 before 4.8.04667.03 — fixed in 4.8.04667.03
Microsoft .NET Framework 3.5 AND 4.8.1: from 4.8.1 before 4.8.09186.01 — fixed in 4.8.09186.01

How to fix

Upgrade to a fixed version: Microsoft .NET Framework 2.0 Service Pack 2 3.0.30729.8957; Microsoft .NET Framework 3.0 Service Pack 2 3.0.30729.8957; Microsoft .NET Framework 3.5 3.0.30729.8957; Microsoft .NET Framework 3.5.1 3.0.30729.8957; Microsoft .NET Framework 3.5 and 4.6.2 10.0.10240.20162; Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 10.0.14393.6252; Microsoft .NET Framework 3.5 AND 4.7.2 4.7.04063.05; Microsoft .NET Framework 3.5 AND 4.8 4.8.04667.03; Microsoft .NET Framework 3.5 AND 4.8.1 4.8.09186.01. Check the vendor advisory for mitigations.

References

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