HIGH Published September 8, 2026

CVE-2026-69439

Heap-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to elevate privileges over a network.

CVSS base score

8.8 (v3.1)

Severity

HIGH

Attack vector

Network

Weakness

CWE-122

Last modified

October 30, 2026

CVSS vector

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

Affected products

microsoft .net microsoft visual studio 2022 microsoft visual studio 2026

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