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CVE-2023-38180

Microsoft .NET Core and Visual Studio Denial-of-Service

7.5 HIGHActively exploited (CISA KEV)EPSS 14.0%
  1. Published8 Aug 2023
  2. Added to CISA KEV9 Aug 2023
  3. Remediation due30 Aug 2023
Actively exploited (CISA KEV)

Microsoft .NET Core and Visual Studio contain an unspecified vulnerability that allows for denial-of-service (DoS).

Added to KEV: 9 Aug 2023Federal remediation due: 30 Aug 2023

Description

.NET and Visual Studio Denial of Service Vulnerability

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Microsoft Asp.net Core≥ 2.1 < 2.1.40
Microsoft .net≥ 6.0.0 < 6.0.21 · ≥ 7.0.0 < 7.0.10
Microsoft Visual Studio 2022≥ 17.2.0 < 17.2.18 · ≥ 17.4.0 < 17.4.10 · ≥ 17.6.0 < 17.6.6
Fedoraproject Fedora37 · 38

Remediation

Fixed in
Microsoft Asp.net Core≥ 2.1.40
Microsoft .net≥ 6.0.21
Microsoft Visual Studio 2022≥ 17.2.18

References

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Frequently asked

Is CVE-2023-38180 being actively exploited?

Yes. CVE-2023-38180 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 9 Aug 2023.

How severe is CVE-2023-38180?

CVE-2023-38180 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 14.0% probability of exploitation.

Which products are affected by CVE-2023-38180?

Affected products include Microsoft Asp.net Core, Microsoft .net, Microsoft Visual Studio 2022, Fedoraproject Fedora.

How do I fix CVE-2023-38180?

Upgrade affected software to a fixed version, for example Microsoft Asp.net Core 2.1.40, Microsoft .net 6.0.21, Microsoft Visual Studio 2022 17.2.18 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-38180 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.