Aug 2026: .NET Elevation of Privilege Vulnerability
CVE-2026-62871 Published on August 11, 2026
.NET Elevation of Privilege Vulnerability
Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.
Vulnerability Analysis
Weakness Types
What is a Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2026-62871 has been classified to as a Memory Corruption vulnerability or weakness.
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-2026-62871
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Affected Versions
Microsoft .NET 8.0 runtime:- Version 8.0.0 and below 8.0.30 is affected.
- Version 9.0.0 and below 9.0.19 is affected.
- Version 17.14.0 and below 17.14.38 is affected.
- Version 18.0 and below 18.8.3 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.