CVE-2023-38180 on CISA KEV

.NET and Visual Studio Denial of Service Vulnerability

01What CISA says about this vulnerability

.NET and Visual Studio Denial of Service Vulnerability

02Required action — verbatim from CISA

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

03Notes & references

• msrc.microsoft.com — https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-38180

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
Microsoft	ASP.NET Core 2.1	2.0
Microsoft	.NET 6.0	6.0.0
Microsoft	.NET 7.0	7.0.0
Microsoft	Microsoft Visual Studio 2022 version 17.2	17.2.0
Microsoft	Microsoft Visual Studio 2022 version 17.4	17.4.0
Microsoft	Microsoft Visual Studio 2022 version 17.6	17.6.0

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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