.NET Security Feature Bypass Vulnerability

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-50528
StatePUBLISHED
Assignermicrosoft
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-14 20:17:37 UTC
Updated2026-07-22 21:17:41 UTC
DescriptionIncorrect authorization in .NET allows an unauthorized attacker to bypass a security feature over a network.

Risk And Classification

Primary CVSS: v3.1 8.2 HIGH from [email protected]

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

EPSS: 0.004360000 probability, percentile 0.353410000 (date 2026-07-19)

Problem Types: CWE-302 | CWE-636 | CWE-863 | CWE-863 CWE-863: Incorrect Authorization | CWE-302 CWE-302: Authentication Bypass by Assumed-Immutable Data | CWE-636 CWE-636: Not Failing Securely ('Failing Open')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
3.1CNACVSS8.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N/E:U/RL:O/RC:C

CVSS v3.1 Breakdown

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

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Microsoft .net All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Microsoft .NET 10.0 affected 10.0.0 10.0.10 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-2026-50528 [email protected] msrc.microsoft.com Patch, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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