Disclosure summary
Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.
Source-reported weakness categories
CWE-787, CWE-122
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
Microsoft Security Updates (CVRF) · 2026-Aug
Open original source · Updated Sep 21, 2026
.NET Elevation of Privilege Vulnerability
Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.
Microsoft maximum product score: 7.8
| Vendor | Product / association | Version / bounds |
|---|---|---|
| Microsoft update guide | .NET 8.0 installed on Windows | (MSRC status code 3) |
| Microsoft update guide | .NET 9.0 installed on Windows | (MSRC status code 3) |
| Microsoft update guide | Microsoft Visual Studio 2026 version 18.8 | (MSRC status code 3) |
| Microsoft update guide | Microsoft Visual Studio 2022 version 17.14 | (MSRC status code 3) |
Vendor remediation references
- 5122104 · build 8.0.30 · product IDs 12414
- Vendor guidance · product IDs 12414
- 5122105 · build 9.0.19 · product IDs 12434
- Vendor guidance · product IDs 12434
- Vendor guidance · build 18.8.3 · product IDs 21681
- Vendor guidance · product IDs 21681
- Vendor guidance · build 17.14.38 · product IDs 16767
- Vendor guidance · product IDs 16767
Original records & references
- NIST NVD record
- CVE Program record
- msrc.microsoft.com — Vendor advisory
PUBLISHED 2026-08-11T03:00:00-04:00
MODIFIED 2026-09-21T03:00:00-04:00
INGESTED 2026-10-08T12:40:35-04:00