.NET Tampering Vulnerability

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Summary

CVECVE-2026-50526
StatePUBLISHED
Assignermicrosoft
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-14 20:17:37 UTC
Updated2026-07-15 11:16:32 UTC
DescriptionImproper link resolution before file access ('link following') in .NET allows an authorized attacker to perform tampering locally.

Risk And Classification

Primary CVSS: v3.1 7 HIGH from [email protected]

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

Problem Types: CWE-59 | CWE-345 | CWE-59 CWE-59: Improper Link Resolution Before File Access ('Link Following') | CWE-345 CWE-345: Insufficient Verification of Data Authenticity

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS7HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Microsoft .NET 10.0 affected 10.0.0 10.0.6 custom Not specified
CNA Microsoft .NET 8.0 affected 8.0.0 8.0.29 custom Not specified
CNA Microsoft .NET 9.0 affected 9.0.0 9.0.18 custom Not specified
CNA Microsoft Microsoft Visual Studio 2022 Version 17.12 affected 17.12.0 17.12.22 custom Not specified
CNA Microsoft Microsoft Visual Studio 2022 Version 17.14 affected 17.14.0 17.14.36 custom Not specified
CNA Microsoft Microsoft Visual Studio 2026 Version 18.7 affected 18.0 18.7.4 custom Not specified

References

ReferenceSourceLinkTags
msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50526 [email protected] msrc.microsoft.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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