What is CVE-2023-38180?

CVE-2023-38180 is a high-severity vulnerability in Microsoft Asp.net Core, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2023-08-08.

How severe is CVE-2023-38180?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2023-38180 known to be exploited?

Yes. CVE-2023-38180 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-08-09), indicating it is being actively exploited. 4 public proof-of-concept repositories are indexed.

Resource exhaustion in Microsoft Asp.net Core

CVE-2023-38180

.NET and Visual Studio Denial of Service Vulnerability

Vulnerability class: DoS (Denial of Service)

Published 2023-08-08 · last modified 2026-08-10.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.140 (96.5th percentile), scored 2026-10-19.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.140 · newest: 0.140 · change: 0.000

Affected products

Microsoft Asp.net Core
Microsoft Asp.net Core 2.1 — versions 2.0
Microsoft Visual Studio 2022 Version 17.2 — versions 17.2.0
Microsoft Visual Studio 2022 Version 17.4 — versions 17.4.0
Microsoft Visual Studio 2022 Version 17.6 — versions 17.6.0
Microsoft .Net
Microsoft .Net 6.0 — versions 6.0.0
Microsoft .Net 7.0 — versions 7.0.0
Microsoft Visual Studio 2022
Fedoraproject Fedora — versions 37, 38

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2023-08-09. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2023-08-30.

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

Public proof-of-concept exploits

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2023-38180 (vendor-advisory, Patch, patch, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2023-38180?: CVE-2023-38180 is a high-severity vulnerability in Microsoft Asp.net Core, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2023-08-08.
How severe is CVE-2023-38180?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2023-38180 known to be exploited?: Yes. CVE-2023-38180 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-08-09), indicating it is being actively exploited. 4 public proof-of-concept repositories are indexed.