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CVE-2026-70354 Details

Description

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

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CNA: [email protected]CVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70354	[email protected]	PatchVendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-787	Out-of-bounds Write	[email protected]

Affected Products

Product	Versions
microsoft visual studio 2022	>= 17.14.0, < 17.14.38
CPE cpe:2.3:a:microsoft:visual_studio_2022:::::::: Remediation No remediation found in references.
microsoft visual studio 2026	>= 18.8.0, < 18.8.3
CPE cpe:2.3:a:microsoft:visual_studio_2026:::::::: Remediation No remediation found in references.
microsoft .net framework	4.8.1 4.8 4.6.2 4.7 4.7.1
CPE cpe:2.3:a:microsoft:.net_framework:4.8.1:::::::* cpe:2.3:a:microsoft:.net_framework:4.8:::::::* cpe:2.3:a:microsoft:.net_framework:4.6.2:::::::* cpe:2.3:a:microsoft:.net_framework:4.7:::::::* cpe:2.3:a:microsoft:.net_framework:4.7.1:::::::* cpe:2.3:a:microsoft:.net_framework:4.7.2:::::::* cpe:2.3:a:microsoft:.net_framework:3.5:-:::::: Remediation No remediation found in references.
microsoft windows 11 26h1	All versions
CPE cpe:2.3:o:microsoft:windows_11_26h1:-::::::arm64: cpe:2.3:o:microsoft:windows_11_26h1:-::::::x64: Remediation No remediation found in references.
microsoft windows 10 1607	All versions
CPE cpe:2.3:o:microsoft:windows_10_1607:-::::::x64: cpe:2.3:o:microsoft:windows_10_1607:-::::::x86: Remediation No remediation found in references.
microsoft windows server 2012	r2
CPE cpe:2.3:o:microsoft:windows_server_2012:-:::::::* cpe:2.3:o:microsoft:windows_server_2012:r2:::::::* Remediation No remediation found in references.
microsoft windows server 2016	All versions
CPE cpe:2.3:o:microsoft:windows_server_2016:-:::::::* Remediation No remediation found in references.
microsoft windows 10 1809	All versions
CPE cpe:2.3:o:microsoft:windows_10_1809:-::::::arm64: cpe:2.3:o:microsoft:windows_10_1809:-::::::x64: cpe:2.3:o:microsoft:windows_10_1809:-::::::x86: Remediation No remediation found in references.
microsoft windows server 2019	All versions
CPE cpe:2.3:o:microsoft:windows_server_2019:-:::::::* Remediation No remediation found in references.
microsoft windows 10 21h2	All versions
CPE cpe:2.3:o:microsoft:windows_10_21h2:-::::::arm64: cpe:2.3:o:microsoft:windows_10_21h2:-::::::x64: cpe:2.3:o:microsoft:windows_10_21h2:-::::::x86: Remediation No remediation found in references.
microsoft windows 10 22h2	All versions
CPE cpe:2.3:o:microsoft:windows_10_22h2:-::::::arm64: cpe:2.3:o:microsoft:windows_10_22h2:-::::::x64: cpe:2.3:o:microsoft:windows_10_22h2:-::::::x86: Remediation No remediation found in references.
microsoft windows 11 23h2	All versions
CPE cpe:2.3:o:microsoft:windows_11_23h2:-::::::arm64: cpe:2.3:o:microsoft:windows_11_23h2:-::::::x64: Remediation No remediation found in references.
microsoft windows 11 24h2	All versions
CPE cpe:2.3:o:microsoft:windows_11_24h2:-::::::arm64: cpe:2.3:o:microsoft:windows_11_24h2:-::::::x64: Remediation No remediation found in references.
microsoft windows 11 25h2	All versions
CPE cpe:2.3:o:microsoft:windows_11_25h2:-::::::arm64: cpe:2.3:o:microsoft:windows_11_25h2:-::::::x64: Remediation No remediation found in references.
microsoft windows server 2022	All versions
CPE cpe:2.3:o:microsoft:windows_server_2022:-:::::::* Remediation No remediation found in references.
microsoft windows server 2025	All versions
CPE cpe:2.3:o:microsoft:windows_server_2025:-::::::x64: Remediation No remediation found in references.
microsoft .net	>= 8.0.0, < 8.0.30 >= 9.0.0, < 9.0.19 >= 10.0.0, < 10.0.11
CPE cpe:2.3:a:microsoft:.net:::::::: Remediation No remediation found in references.
microsoft windows	All versions
CPE cpe:2.3:o:microsoft:windows:-:::::::* Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Aug 17, 2026	Initial Analysis	[email protected]
Aug 12, 2026	CVE Modified	CISA-ADP
Aug 11, 2026	New CVE Received	[email protected]

CVE-2026-70354 Details

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Affected Products

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