Vulnerability Intelligence Report
.NET and Visual Studio Elevation of Privilege Vulnerability
CVE-2026-69439
Heap-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to elevate privileges over a network.
No Active Exploit Signals
CVSS Base Score
8.8
HIGH
Exploitability:2.9
Impact Score:5.9
EPSS Probability:0.86%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-122 ↗CWE-122: Heap-based Buffer Overflow
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Microsoft | .NET 10.0 | 10.0.0 < 10.0.12 (affected) |
| Microsoft | .NET 11.0 | 11.0.0 < 11.0 RC1 (affected) |
| Microsoft | .NET 8.0 | 8.0.0 < 8.0.31 (affected) |
| Microsoft | .NET 9.0 | 9.0.0 < 9.0.20 (affected) |
| Microsoft | Microsoft Visual Studio 2022 version 17.14 | 17.14.0 < 17.14.40 (affected) |
| Microsoft | Microsoft Visual Studio 2026 version 18.9 | 18.9.0 < 18.9.3 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.859%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Microsoft Corporation · Vendor · USA |
| Reserved | 2026-08-03T20:59:32 |
| Published | 2026-09-08T17:17:35 |
| Patch Date | 2026-09-08 |
| Last Updated | 2026-09-24T17:16:57 |
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