Vulnerability Intelligence Report
.NET Core Remote Code Execution Vulnerability
CVE-2026-70354
Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.
No Active Exploit Signals
CVSS Base Score
7.8
HIGH
Exploitability:1.9
Impact Score:5.9
EPSS Probability:0.36%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-787 ↗CWE-787: Out-of-bounds Write
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Microsoft | .NET 10.0 | 10.0.0 < 10.0.11 (affected) |
| Microsoft | .NET 8.0 | 8.0.0 < 8.0.30 (affected) |
| Microsoft | .NET 9.0 | 9.0.0 < 9.0.19 (affected) |
| Microsoft | Microsoft .NET Framework 3.5 | 3.5.0 < 2.0.50727.8984 & 3.0.30729.8980 (affected) |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 | 3.0.0.0 < 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4144.0 (affected) |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 | 4.7.0 < 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4144.0 (affected) |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 | 4.8.0 < 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0 (affected) |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 | 4.8.1 < 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0 (affected) |
| Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 | 4.7.0 < 4.7.4144.0 (affected) |
| Microsoft | Microsoft .NET Framework 4.8 | 4.8.0 < 4.8.4805.0 (affected) |
| Microsoft | Microsoft .NET Framework 4.8.1 | 4.8.0.0 < 4.8.9344.0 (affected) |
| Microsoft | Microsoft Visual Studio 2022 version 17.14 | 17.14.0 < 17.14.38 (affected) |
| Microsoft | Microsoft Visual Studio 2026 version 18.8 | 18.0 < 18.8.3 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.363%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Microsoft Corporation · Vendor · USA |
| Reserved | 2026-08-04T00:04:56 |
| Published | 2026-08-11T17:07:15 |
| Patch Date | 2026-08-11 |
| Last Updated | 2026-09-24T13:47:26 |
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