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CVE-2023-35391

Microsoft .NET 6.0, .NET 7.0, ASP.NET Core 2.1

CVE-2023-35391 affects Microsoft .NET 6.0, .NET 7.0, ASP.NET Core 2.1. Review the CVSS score, exploitation signals, affected versions, remediation status, and linked source material before making a change.

CVSS
7.5
EPSS
1.90%
78.3% percentile
CISA KEV
Not listed
Published
2023.08.09
PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability1.90%
Technical severityCVSS 7.5

Vulnerability overview

CVE-2023-35391 affects Microsoft .NET 6.0, .NET 7.0, ASP.NET Core 2.1. Review the CVSS score, exploitation signals, affected versions, remediation status, and linked source material before making a change.

Affected product and versions

Product
Microsoft .NET 6.0, .NET 7.0, ASP.NET Core 2.1
Affected versions
>= 6.0.0 < 6.0.21, >= 7.0.0 < 7.0.10, >= 2.0 < 2.1.40, >= 17.2.0 < 17.2.18, >= 17.4.0 < 17.4.10, >= 17.6.0 < 17.6.6, >= 2.1 < 2.1.40
Fixed versions
6.0.21, 7.0.10, 2.1.40, 17.2.18, 17.4.10, 17.6.6

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Microsoft .NET 6.0, .NET 7.0, ASP.NET Core 2.1 and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
Not available