CVE-2026-70197

high

EUVD alias: EUVD-2026-99701

Assigned by CNA: microsoft

Published 2026-10-13 · Modified 2026-10-13

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CVSS v3

8.1

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

CVSS v4 NEW

—

not yet in upstream

VIR risk

8.1

Description

Out-of-bounds write in .NET allows an unauthorized attacker to execute code over a network.

Predictions

Exploit likelihood

88%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

Windows Affected 1 release

Version	Package	Status	Fixed in
—	—	Affected	—

Package impact

Ecosystem	Package	Vulnerable	Fixed
NuGet	Microsoft.NETCore.App.Runtime.win-x64	`>= 11.0.0-preview.1, <= 11.0.0-rc.1`	`11.0.0-rc.2`
NuGet	Microsoft.NETCore.App.Runtime.win-x86	`>= 8.0.0, <= 8.0.31`	`8.0.32`
NuGet	Microsoft.NETCore.App.Runtime.win-x86	`>= 10.0.0, <= 10.0.12`	`10.0.13`
NuGet	Microsoft.NETCore.App.Runtime.win-x64	`>= 8.0.0, <= 8.0.31`	`8.0.32`
NuGet	Microsoft.NETCore.App.Runtime.win-arm64	`>= 8.0.0, <= 8.0.31`	`8.0.32`
NuGet	Microsoft.NETCore.App.Runtime.win-arm64	`>= 10.0.0, <= 10.0.12`	`10.0.13`
NuGet	Microsoft.NETCore.App.Runtime.win-arm64	`>= 9.0.0, <= 9.0.20`	`9.0.21`
NuGet	Microsoft.NETCore.App.Runtime.win-x64	`>= 10.0.0, <= 10.0.12`	`10.0.13`
NuGet	Microsoft.NETCore.App.Runtime.win-x86	`>= 9.0.0, <= 9.0.20`	`9.0.21`
NuGet	Microsoft.NETCore.App.Runtime.win-x64	`>= 9.0.0, <= 9.0.20`	`9.0.21`
NuGet	Microsoft.NETCore.App.Runtime.win-x86	`>= 11.0.0-preview.1, <= 11.0.0-rc.1`	`11.0.0-rc.2`
NuGet	Microsoft.NETCore.App.Runtime.win-arm64	`>= 11.0.0-preview.1, <= 11.0.0-rc.1`	`11.0.0-rc.2`

References

CWEs

CWE-787

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.