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CVE-2026-69439

nvd nist
Published: Sep 8, 2026Modified: Sep 29, 2026

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8.8
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploitability: 2.8 / Impact: 5.9
Source: secure@microsoft.com (Secondary)

Description

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

Affected (12)

Microsoft
3 products
.net
Visual Studio 2022
Visual Studio 2026
Configuration A
10 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
Microsoft
.net
10.0.0 ≤ version < 10.0.12
.net
8.0.0 ≤ version < 8.0.31
.net
9.0.0 ≤ version < 9.0.20
.net
Version 11.0.0 preview1
.net
Version 11.0.0 preview2
.net
Version 11.0.0 preview3
.net
Version 11.0.0 preview4
.net
Version 11.0.0 preview5
.net
Version 11.0.0 preview6
.net
Version 11.0.0 preview7
Running on/withPlatform Versions
Microsoft
Windows
All versions
Configuration B
2 vulnerable
Vulnerable SoftwareAffected Versions
Visual Studio 2022
17.14.0 ≤ version < 17.14.40
Visual Studio 2026
18.9.0 ≤ version < 18.9.3

Related CWEs

CWE-122
Heap-based Buffer Overflow
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

References (1)

Source: secure@microsoft.com
PatchVendor Advisory

Timeline

No history available yet.