CVE-2026-70354

HighCVSS 7.8/10Last modified Oct 28, 2026

Description

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

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-787

Affected software

Vendor	Product	Versions
Microsoft	.NET 10.0 runtime	>= 10.0.0, < 10.0.11
Microsoft	.NET 8.0 runtime	>= 8.0.0, < 8.0.30
Microsoft	.NET 9.0 runtime	>= 9.0.0, < 9.0.19
Microsoft	Microsoft .NET Framework 3.5	>= 3.5.0, < 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	>= 3.0.0.0, < 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4144.0
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
Microsoft	Microsoft .NET Framework 3.5 AND 4.8	>= 4.8.0, < 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0
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
Microsoft	Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2	>= 4.7.0, < 4.7.4144.0
Microsoft	Microsoft .NET Framework 4.8	>= 4.8.0, < 4.8.4805.0
Microsoft	Microsoft .NET Framework 4.8.1	>= 4.8.0.0, < 4.8.9344.0
Microsoft	Microsoft Visual Studio 2022 version 17.14	>= 17.14.0, < 17.14.38
Microsoft	Microsoft Visual Studio 2026 version 18.8	>= 18.0, < 18.8.3

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70354Patch, Vendor Advisory

Timeline

Published: Aug 11, 2026
Last modified: Oct 28, 2026
NVD status: Analyzed

Related CVEs from 2026

CVE-2026-703558.7Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized att CVE-2026-703569.1The TMS file upload endpoint fails to enforce server-side file type restrictions, allowing an attacker to upload and execute arbitrary PHP f CVE-2026-703577.5Gitea validates a repository migration hostname against its network allow and block lists before invoking Git, but the Git subprocess indepe CVE-2026-70369.8A vulnerability was identified in Tenda i9 1.0.0.5(2204). This vulnerability affects the function R7WebsSecurityHandlerfunction of the compo CVE-2026-703675.4A Server-Side Request Forgery (SSRF) bypass vulnerability exists in “stunnel” 5.79 and lower when configured in SOCKS proxy mode. This flaw CVE-2026-703686.5A stack-based out-of-bounds read vulnerability exists in the "s_vlog" function of stunnel, when handling oversized log messages via "vsnprin CVE-2026-703698.8Koha's reports/acquisitions_stats.pl builds its per-cell statistics query in sub calculate by interpolating the user-controlled Filter reque CVE-2026-70379.8A security flaw has been discovered in Totolink A8000RU 7.1cu.643_b20200521. This issue affects the function setVpnPassCfg of the file /cgi-CVE-2026-703708.8Koha's reports/catalogue_stats.pl builds dynamic SQL in sub calculate by interpolating the user-controlled Line and Column request parameter CVE-2026-703718.8Koha's reports/issues_avg_stats.pl builds dynamic SQL in sub calculate by concatenating several user-controlled request parameters directly CVE-2026-703728.8Koha's reports/bor_issues_top.pl builds dynamic SQL in sub calculate by concatenating several user-controlled request parameters directly in CVE-2026-703738.8Koha's reports/issues_stats.pl (the circulation statistics report) builds its calculation query in sub calculate by concatenating several us