Uncaught exception in .NET allows an authorized attacker to elevate privileges locally.

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00295.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Microsoft .NET 10.0 affected
Version Status Constraints
10.0.0 affected < 10.0.11
Microsoft .NET 8.0 affected
Version Status Constraints
8.0.0 affected < 8.0.30
Microsoft .NET 9.0 affected
Version Status Constraints
9.0.0 affected < 9.0.19
Microsoft Microsoft Visual Studio 2022 version 17.14 affected
Version Status Constraints
17.14.0 affected < 17.14.38
Microsoft Microsoft Visual Studio 2026 version 18.8 affected
Version Status Constraints
18.0 affected < 18.8.3

No data.

No data.

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No data.

Project Subscriptions

Vendors Products
Microsoft Subscribe
.net Subscribe
Visual Studio 2022 Subscribe
Visual Studio 2026 Subscribe
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-9mr8-pwpw-3j2w Microsoft Security Advisory CVE-2026-62909 – .NET Elevation of Privilege Vulnerability
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62909 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-62909 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-62909 cve-icon
History

Wed, 12 Aug 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Wed, 12 Aug 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 threat_severity

Important

Tue, 11 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-248

Tue, 11 Aug 2026 19:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-252

Tue, 11 Aug 2026 17:15:00 +0000

Type Values Removed Values Added
Description Uncaught exception in .NET allows an authorized attacker to elevate privileges locally.
Title .NET Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft .net
Microsoft visual Studio 2022
Microsoft visual Studio 2026
Weaknesses CWE-248
CPEs cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft .net
Microsoft visual Studio 2022
Microsoft visual Studio 2026
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-08-12T14:57:36.360Z

Reserved: 2026-07-14T21:25:21.036Z

Link: CVE-2026-62909

cve-icon Vulnrichment

Updated: 2026-08-12T13:46:12.479Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-08-11T17:18:44.817

Modified: 2026-08-12T14:18:25.547

Link: CVE-2026-62909

cve-icon Redhat

Severity : Important

Publid Date: 2026-08-11T00:00:00Z

Links: CVE-2026-62909 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-12T14:30:03Z

Weaknesses