.NET Elevation of Privilege Vulnerability
Summary
| CVE | CVE-2026-35433 |
|---|---|
| State | PUBLISHED |
| Assigner | microsoft |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-12 18:17:13 UTC |
| Updated | 2026-07-15 02:20:42 UTC |
| Description | Improper input validation in .NET allows an unauthorized attacker to elevate privileges locally. |
Risk And Classification
Primary CVSS: v3.1 7.3 HIGH from ADP
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
EPSS: 0.005280000 probability, percentile 0.404970000 (date 2026-06-24)
Problem Types: CWE-20 | CWE-190 | NVD-CWE-noinfo | CWE-20 CWE-20: Improper Input Validation | CWE-190 CWE-190: Integer Overflow or Wraparound | CWE-20 Improper Input Validation
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | ADP | CVSS | 7.3 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L |
| 3.1 | [email protected] | Secondary | 7.3 | HIGH | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L |
| 3.1 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | Secondary | 7.3 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L |
| 3.1 | CNA | CVSS | 7.3 | HIGH | 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 |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Microsoft | .net Framework | 3.5 | All | All | All |
| Application | Microsoft | .net Framework | 4.8 | All | All | All |
| Operating System | Microsoft | Windows 10 1607 | - | All | All | All |
| Operating System | Microsoft | Windows Server 2012 | - | All | All | All |
| Operating System | Microsoft | Windows Server 2012 | r2 | All | All | All |
| Operating System | Microsoft | Windows Server 2016 | - | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Microsoft | .NET 10.0 | affected 10.0.0 10.0.8 custom | Not specified |
| CNA | Microsoft | .NET 8.0 | affected 8.0.0 8.0.27 custom | Not specified |
| CNA | Microsoft | .NET 9.0 | affected 9.0.0 9.0.16 custom | Not specified |
| CNA | Microsoft | Microsoft .NET Framework 3.5 | affected 3.5.0 4.8.9334.0 and 4.8.4802.0 custom | Windows Server 2012, Windows Server 2012 R2 |
| CNA | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 | affected 4.7.0 4.8.9334.0 and 4.8.4802.0 custom | Windows 10 Version 1809 for ARM64-based Systems, Windows 10 Version 1809 for x64-based Systems |
| CNA | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 | affected 4.8.0 4.8.9334.0 and 4.8.4802.0 custom | 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 Server 2022 |
| CNA | Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 | affected 4.8.1 4.8.9334.0 and 4.8.4802.0 custom | Windows 10 Version 21H2 for ARM64-based Systems, Windows 10 Version 21H2 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 Server 2022, Windows Server 2025 |
| CNA | Microsoft | Microsoft .NET Framework 4.8 | affected 4.8.0 4.8.9334.0 and 4.8.4802.0 custom | Windows 10 Version 1607 for x64-based Systems, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016 |
| ADP | Red Hat | Red Hat Enterprise Linux 10 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 10 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 10 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 8 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 8 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 8 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 9 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 9 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 9 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Hardened Images | Not specified | Not specified |
| ADP | Red Hat | Red Hat Hardened Images | Not specified | Not specified |
| ADP | Red Hat | Red Hat Hardened Images | Not specified | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| bugzilla.redhat.com/show_bug.cgi | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | bugzilla.redhat.com | |
| msrc.microsoft.com/update-guide/vulnerability/CVE-2026-35433 | [email protected] | msrc.microsoft.com | Vendor Advisory |
| access.redhat.com/security/cve/CVE-2026-35433 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-35433.json | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | security.access.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| ADP | 2026-05-12T18:01:11.848Z | Reported to Red Hat. |
| ADP | 2026-05-12T16:58:34.612Z | Made public. |
There are currently no legacy QID mappings associated with this CVE.