High MSRC-CVE-2026-70354 1 CVE

.NET Core Remote Code Execution Vulnerability

Published Aug 11, 2026 · Updated Aug 13, 2026 · Revision 2

Vendor: Microsoft

Summary

Impact: Remote Code Execution. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.

Details

Security updates
2.0.50727.8984 & 3.0.30729.8980 & 4.7.4144.0 — https://support.microsoft.com/help/5120418
2.0.50727.8984 & 3.0.30729.8980 — https://support.microsoft.com/help/5120716
2.0.50727.9183 & 3.0.30729.9169 — https://support.microsoft.com/help/5120747
2.0.50727.8984 & 3.0.30729.8980 — https://support.microsoft.com/help/5120695
2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0 — https://support.microsoft.com/help/5120703
2.0.50727.9070 & 3.0.30729.9068 & 4.7.4144.0 — https://support.microsoft.com/help/5120698
2.0.50727.9183 & 3.0.30729.9169 & 4.8.4805.0 — https://support.microsoft.com/help/5120701
2.0.50727.9183 & 3.0.30729.9169 & 4.8.4805.0 — https://support.microsoft.com/help/5120705
2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0 — https://support.microsoft.com/help/5120709
2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0 — https://support.microsoft.com/help/5120714
4.7.4144.0 — https://support.microsoft.com/help/5120700
4.7.4144.0 — https://support.microsoft.com/help/5120699
4.8.4805.0 — https://support.microsoft.com/help/5120702
4.8.4805.0 — https://support.microsoft.com/help/5120704
9.0.19 — https://support.microsoft.com/help/5122105
8.0.30 — https://support.microsoft.com/help/5122104
10.0.11 — https://support.microsoft.com/help/5122106
2.0.50727.9183 & 3.0.30729.9169 & 4.8.9344.0 — https://support.microsoft.com/help/5120708
2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0 — https://support.microsoft.com/help/5120710
2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0 — https://support.microsoft.com/help/5120713
4.8.4805.0 — https://support.microsoft.com/help/5120706
4.8.9344.0 — https://support.microsoft.com/help/5120711

Vulnerabilities 1

High 7.8

CVE-2026-70354

.NET Core Remote Code Execution Vulnerability

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

Microsoft Microsoft Visual Studio 2022 version 17.14 Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 Microsoft .NET Framework 3.5 AND 4.7.2 Ubuntu Alpine NuGet

Aug 11, 2026

Revision history

2026-08-13 #2
Removed Linux and macOS products from the Affected Software table. This is an informational change only.
2026-08-11 #1
Information published.

References

CVE-2026-70354 .NET Core Remote Code Execution Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70354
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
Common Vulnerability Scoring System
https://www.first.org/cvss