Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00387.

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 .NET Framework 3.5 affected
Version Status Constraints
3.5.0 affected < 2.0.50727.8984 & 3.0.30729.8980
Microsoft Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 affected
Version Status Constraints
3.0.0.0 affected < 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4144.0
Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 affected
Version Status Constraints
4.7.0 affected < 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4144.0
Microsoft Microsoft .NET Framework 3.5 AND 4.8 affected
Version Status Constraints
4.8.0 affected < 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0
Microsoft Microsoft .NET Framework 3.5 AND 4.8.1 affected
Version Status Constraints
4.8.1 affected < 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0
Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 affected
Version Status Constraints
4.7.0 affected < 4.7.4144.0
Microsoft Microsoft .NET Framework 4.8 affected
Version Status Constraints
4.8.0 affected < 4.8.4805.0
Microsoft Microsoft .NET Framework 4.8.1 affected
Version Status Constraints
4.8.0.0 affected < 4.8.9344.0
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.

No data.

Project Subscriptions

Vendors Products
Microsoft Subscribe
.net Subscribe
.net Framework Subscribe
Visual Studio 2022 Subscribe
Visual Studio 2026 Subscribe
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-gg8c-3338-xw2f Microsoft Security Advisory CVE-2026-70354 – .NET Core Remote Code Execution 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-2026-70354 cve-icon cve-icon
History

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

Type Values Removed Values Added
Description Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.
Title .NET Core Remote Code Execution Vulnerability
First Time appeared Microsoft
Microsoft .net
Microsoft .net Framework
Microsoft visual Studio 2022
Microsoft visual Studio 2026
Weaknesses CWE-787
CPEs cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft .net
Microsoft .net Framework
Microsoft visual Studio 2022
Microsoft visual Studio 2026
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/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: 2026-08-12T00:01:20.663Z

Reserved: 2026-08-04T00:04:56.037Z

Link: CVE-2026-70354

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-11T17:19:12.640

Modified: 2026-08-11T18:53:42.910

Link: CVE-2026-70354

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses