Priority reviewHigh

CVE-2023-36899

Microsoft Microsoft .NET Framework 2.0 Service Pack 2, Microsoft .NET Framework 3.5 and 4.6.2, Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2

CVE-2023-36899 affects Microsoft Microsoft .NET Framework 2.0 Service Pack 2, Microsoft .NET Framework 3.5 and 4.6.2, Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2. Review the CVSS score, exploitation signals, affected versions, remediation status, and linked source material before making a change.

CVSS: 8.8
EPSS: 77.1%
CISA KEV: Not listed
Published: 2023.08.09

PRIORITY ASSESSMENT

Priority review

FIRST EPSS indicates an elevated probability of exploitation.

Known exploitationNot established by KEV

Exploit probability77.1%

Technical severityCVSS 8.8

Vulnerability overview

Affected product and versions

Product: Microsoft Microsoft .NET Framework 2.0 Service Pack 2, Microsoft .NET Framework 3.5 and 4.6.2, Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2
Affected versions: >= 2.0.0 < 2.0.50727.8974, >= 4.7.0 < 10.0.10240.20107, >= 3.0.0.0 < 10.0.14393.6167, >= 4.7.0 < 4.7.4057.05, >= 4.8.0 < 4.8.04654.06, >= 4.8.1 < 4.8.09176.01, >= 4.7.0 < 4.7.04057.05, >= 4.8.0 < 4.8.4654.06, 4.8, 4.6.2, 4.7, 4.7.1, 4.7.2, 3.5, 4.8.1, 2.0
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Microsoft Microsoft .NET Framework 2.0 Service Pack 2, Microsoft .NET Framework 3.5 and 4.6.2, Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-20