Sep 2026: .NET and Visual Studio Elevation of Privilege Vulnerability
CVE-2026-69439 Published on September 8, 2026
.NET and Visual Studio Elevation of Privilege Vulnerability
Heap-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to elevate privileges over a network.
Vulnerability Analysis
Exploitation:
NONE
Automatable:
NO
Technical Impact:
TOTAL
Weakness Type
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().
Products Associated with CVE-2026-69439
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Affected Versions
Microsoft .NET 10.0 runtime:- Version 10.0.0 and below 10.0.12 is affected.
- Version 11.0.0 and below 11.0 RC1 is affected.
- Version 8.0.0 and below 8.0.31 is affected.
- Version 9.0.0 and below 9.0.20 is affected.
- Version 17.14.0 and below 17.14.40 is affected.
- Version 18.9.0 and below 18.9.3 is affected.