CVE-2023-21722: .NET Framework Denial of Service Vulnerability

Medium severity · published Feb 14, 2023

CVE-2023-21722

.NET Framework Denial of Service Vulnerability

5.0

CVSS

0.9%

EPSS

On KEV

CVSS vector

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

Attack vector

Local

Complexity

Low

Privileges

Low

User interaction

Required

Confidentiality

None

Integrity

None

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.9% · higher than 60% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Microsoft .NET Framework 2.0 Service Pack 2 · Microsoft

2.0.0 before 2.0.50727.8966 · source: vendor

Microsoft .NET Framework 3.0 Service Pack 2 · Microsoft

3.0.0 before 2.0.50727.8966 · source: vendor

Microsoft .NET Framework 3.5 · Microsoft

3.5.0 before 3.5.50727.8966 · source: vendor

Microsoft .NET Framework 3.5 AND 4.7.2 · Microsoft

4.7.0 before 10.0.04038.03 · source: vendor

Microsoft .NET Framework 3.5 AND 4.8 · Microsoft

4.8.0 before 10.0.04614.06 · source: vendor

Microsoft .NET Framework 3.5 AND 4.8.1 · Microsoft

4.8.1 before 10.0.09139.02 · source: vendor

Microsoft .NET Framework 3.5 and 4.6.2 · Microsoft

4.7.0 before 10.0.10240.19747 · source: vendor

Microsoft .NET Framework 3.5.1 · Microsoft

3.5.0 before 3.5.50727.8966 · source: vendor

Microsoft .NET Framework 4.6.2 · Microsoft

4.7.0 before 4.7.04038.06 · source: vendor

Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 · Microsoft

4.7.0 before 4.7.04614.08 · source: vendor

Microsoft .NET Framework 4.8 · Microsoft

4.8.0 before 4.8.4614.08 · source: vendor

.net Framework · Microsoft

3.5; 4.7.2; 3.5; 4.8; 3.5; 4.8.1; +12 more · source: NVD

Affected product

Microsoft .NET Framework 2.0 Service Pack 2

Microsoft

All Microsoft .NET Framework 2.0 Service Pack 2 CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2023-21722

CVE.org

https://www.cve.org/CVERecord?id=CVE-2023-21722

Patch

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21722

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