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CVE Vulnerability Details :
CVE-2026-35433
PUBLISHED
More InfoOfficial Page
Assigner-microsoft
Assigner Org ID-f38d906d-7342-40ea-92c1-6c4a2c6478c8
View Known Exploited Vulnerability (KEV) details
Published At-12 May, 2026 | 16:58
Updated At-15 May, 2026 | 17:12
Rejected At-
▼CVE Numbering Authority (CNA)
.NET Elevation of Privilege Vulnerability

Improper input validation in .NET allows an unauthorized attacker to elevate privileges locally.

Affected Products
Vendor
Microsoft CorporationMicrosoft
Product
.NET 10.0
Versions
Affected
  • From 10.0.0 before 10.0.8 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
.NET 8.0
Versions
Affected
  • From 8.0.0 before 8.0.27 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
.NET 9.0
Versions
Affected
  • From 9.0.0 before 9.0.16 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Microsoft .NET Framework 3.5
Platforms
  • Windows Server 2012
  • Windows Server 2012 R2
Versions
Affected
  • From 3.5.0 before 4.8.9334.0 and 4.8.4802.0 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Microsoft .NET Framework 3.5 AND 4.7.2
Platforms
  • Windows 10 Version 1809 for ARM64-based Systems
  • Windows 10 Version 1809 for x64-based Systems
Versions
Affected
  • From 4.7.0 before 4.8.9334.0 and 4.8.4802.0 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Microsoft .NET Framework 3.5 AND 4.8
Platforms
  • Windows 10 Version 1809 for ARM64-based Systems
  • Windows 10 Version 1809 for x64-based Systems
  • Windows 10 Version 21H2 for ARM64-based Systems
  • Windows 10 Version 21H2 for x64-based Systems
  • Windows 10 Version 22H2 for ARM64-based Systems
  • Windows 10 Version 22H2 for x64-based Systems
  • Windows 11 version 21H2 for ARM64-based Systems
  • Windows Server 2022
Versions
Affected
  • From 4.8.0 before 4.8.9334.0 and 4.8.4802.0 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Microsoft .NET Framework 3.5 AND 4.8.1
Platforms
  • Windows 10 Version 21H2 for ARM64-based Systems
  • Windows 10 Version 21H2 for x64-based Systems
  • Windows 11 Version 22H2 for ARM64-based Systems
  • Windows 11 Version 22H2 for x64-based Systems
  • Windows 11 Version 23H2 for ARM64-based Systems
  • Windows 11 Version 23H2 for x64-based Systems
  • Windows 11 Version 24H2 for ARM64-based Systems
  • Windows 11 Version 24H2 for x64-based Systems
  • Windows 11 Version 25H2 for ARM64-based Systems
  • Windows 11 Version 25H2 for x64-based Systems
  • Windows 11 Version 26H1 for ARM64-based Systems
  • Windows 11 Version 26H1 for x64-based Systems
  • Windows 11 version 26H1 for x64-based Systems
  • Windows Server 2022
  • Windows Server 2025
Versions
Affected
  • From 4.8.1 before 4.8.9334.0 and 4.8.4802.0 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Microsoft .NET Framework 4.8
Platforms
  • Windows 10 Version 1607 for x64-based Systems
  • Windows Server 2012
  • Windows Server 2012 R2
  • Windows Server 2016
Versions
Affected
  • From 4.8.0 before 4.8.9334.0 and 4.8.4802.0 (custom)
Problem Types
TypeCWE IDDescription
CWECWE-20CWE-20: Improper Input Validation
CWECWE-190CWE-190: Integer Overflow or Wraparound
Type: CWE
CWE ID: CWE-20
Description: CWE-20: Improper Input Validation
Type: CWE
CWE ID: CWE-190
Description: CWE-190: Integer Overflow or Wraparound
Metrics
VersionBase scoreBase severityVector
3.17.3HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C
Version: 3.1
Base score: 7.3
Base severity: HIGH
Vector:
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-35433
vendor-advisory
patch
Hyperlink: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-35433
Resource:
vendor-advisory
patch
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found