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HIGH · CVSS 7.5 CISA Known Exploited Vulnerability

CVE-2023-38180

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

Microsoft .NET Core and Visual Studio

.NET and Visual Studio Denial of Service Vulnerability

CVSS
7.5
HIGH
EPSS
14%
30-day exploitation
Ransomware groups
0
recorded exploiting
Published
8 Aug 2023
CWE-400

Exploitation status

CISA Known Exploited Vulnerabilities

Listed by CISA on 9 August 2023. US federal agencies were required to remediate it by 30 August 2023.

EPSS — exploitation probability

FIRST puts the probability of exploitation activity in the next 30 days at 14%, which is higher than 96.5% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Frequently asked questions

Is CVE-2023-38180 being exploited by ransomware groups?

No ransomware group in this database is currently recorded as exploiting CVE-2023-38180.

What does CVE-2023-38180 affect?

CVE-2023-38180 affects Microsoft .NET Core and Visual Studio. .NET and Visual Studio Denial of Service Vulnerability

How severe is CVE-2023-38180?

CVE-2023-38180 is rated HIGH with a CVSS base score of 7.5. EPSS puts the probability of exploitation in the next 30 days at 14%, higher than 96.5% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 30 August 2023.

How should organisations respond to CVE-2023-38180?

Apply the vendor patch for Microsoft .NET Core and Visual Studio as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.