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CVE-2019-0657

A vulnerability exists in certain .Net Framework API's and Visual Studio in the way they parse URL's, aka '.NET Framework and Visual…

Description

A vulnerability exists in certain .Net Framework API's and Visual Studio in the way they parse URL's, aka '.NET Framework and Visual Studio Spoofing Vulnerability'.

Timeline

  1. ID reserved

    By microsoft

  2. · 3 months later

    Published

  3. · 5 years later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2019-0657, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.0Medium5.9CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS (exploitation in 30 days)
4.6% · top 8.3% of all CVEs (10 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.9.

Affected products

  • Microsoft · Microsoft .NET Framework 4.5.2

    • affected Windows 7 for 32-bit Systems Service Pack 1
    • affected Windows 7 for x64-based Systems Service Pack 1
    • affected Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
    • affected Windows Server 2008 R2 for x64-based Systems Service Pack 1
    • affected Windows Server 2012
    • affected Windows Server 2012 (Server Core installation)
    • affected Windows 8.1 for 32-bit systems
    • affected Windows 8.1 for x64-based systems
    • affected Windows Server 2012 R2
    • affected Windows RT 8.1
    • affected Windows Server 2012 R2 (Server Core installation)
    • affected Windows Server 2008 for 32-bit Systems Service Pack 2
    • affected Windows Server 2008 for x64-based Systems Service Pack 2

  • Microsoft · Microsoft .NET Framework 4.6

    • affected Windows Server 2008 for 32-bit Systems Service Pack 2
    • affected Windows Server 2008 for x64-based Systems Service Pack 2

  • Microsoft · .NET Core

    • affected 1
    • affected 2.1
    • affected 2.2

  • Microsoft · Microsoft Visual Studio

    • affected 2017

  • Microsoft · Microsoft .NET Framework 4.7.2

    • affected Windows 10 Version 1803 for 32-bit Systems
    • affected Windows 10 Version 1803 for x64-based Systems
    • affected Windows Server, version 1803 (Server Core Installation)
    • affected Windows 10 Version 1803 for ARM64-based Systems
    • affected Windows 10 Version 1809 for 32-bit Systems
    • affected Windows 10 Version 1809 for x64-based Systems
    • affected Windows Server 2019
    • affected Windows Server 2019 (Server Core installation)

  • Microsoft · Microsoft .NET Framework 4.6/4.6.1/4.6.2

    • affected Windows 10 for 32-bit Systems
    • affected Windows 10 for x64-based Systems

  • Microsoft · Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2

    • affected Windows 7 for 32-bit Systems Service Pack 1
    • affected Windows 7 for x64-based Systems Service Pack 1
    • affected Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
    • affected Windows Server 2008 R2 for x64-based Systems Service Pack 1
    • affected Windows Server 2012
    • affected Windows Server 2012 (Server Core installation)
    • affected Windows 8.1 for 32-bit systems
    • affected Windows 8.1 for x64-based systems
    • affected Windows Server 2012 R2
    • affected Windows RT 8.1
    • affected Windows Server 2012 R2 (Server Core installation)

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

    • affected Windows Server 2016
    • affected Windows 10 Version 1607 for 32-bit Systems
    • affected Windows 10 Version 1607 for x64-based Systems
    • affected Windows Server 2016 (Server Core installation)

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

    • affected Windows 10 Version 1703 for 32-bit Systems
    • affected Windows 10 Version 1703 for x64-based Systems

  • Microsoft · Microsoft .NET Framework 4.7.1/4.7.2

    • affected Windows 10 Version 1709 for 32-bit Systems
    • affected Windows 10 Version 1709 for x64-based Systems
    • affected Windows Server, version 1709 (Server Core Installation)
    • affected Windows 10 Version 1709 for ARM64-based Systems

  • Microsoft · PowerShell Core

    • affected 6.1
    • affected 6.2

  • Microsoft · Microsoft Visual Studio 2017

    • affected version 15.9

  • Microsoft · Microsoft .NET Framework 3.5

    • affected Windows Server 2012
    • affected Windows Server 2012 (Server Core installation)
    • affected Windows 8.1 for 32-bit systems
    • affected Windows 8.1 for x64-based systems
    • affected Windows Server 2012 R2
    • affected Windows Server 2012 R2 (Server Core installation)
    • affected Windows 10 for 32-bit Systems
    • affected Windows 10 for x64-based Systems
    • affected Windows Server 2016
    • affected Windows 10 Version 1607 for 32-bit Systems
    • affected Windows 10 Version 1607 for x64-based Systems
    • affected Windows 10 Version 1703 for 32-bit Systems
    • affected Windows 10 Version 1703 for x64-based Systems
    • affected Windows 10 Version 1709 for 32-bit Systems
    • affected Windows 10 Version 1709 for x64-based Systems
    • affected Windows Server, version 1709 (Server Core Installation)
    • affected Windows 10 Version 1803 for 32-bit Systems
    • affected Windows 10 Version 1803 for x64-based Systems
    • affected Windows Server, version 1803 (Server Core Installation)
    • affected Windows 10 Version 1803 for ARM64-based Systems
    • affected Windows 10 Version 1809 for 32-bit Systems
    • affected Windows 10 Version 1809 for x64-based Systems
    • affected Windows Server 2019
    • affected Windows Server 2019 (Server Core installation)
    • affected Windows 10 Version 1709 for ARM64-based Systems

  • Microsoft · Microsoft .NET Framework 3.0

    • affected Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2
    • affected Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2
    • affected Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2

  • Microsoft · Microsoft .NET Framework 2.0

    • affected Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2

  • Microsoft · Microsoft .NET Framework 3.5.1

    • affected Windows 7 for 32-bit Systems Service Pack 1
    • affected Windows 7 for x64-based Systems Service Pack 1
    • affected Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
    • affected Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1
    • affected Windows Server 2008 R2 for x64-based Systems Service Pack 1

Affected packages

From reviewed advisories of the GitHub Advisory Database.

References

3

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

CVE-2019-0657 badge
[![CVE-2019-0657](https://cveledger.app/badge/CVE-2019-0657.svg)](https://cveledger.app/cve/CVE-2019-0657)

Record last updated .