Aug 2026: .NET Framework Remote Code Execution Vulnerability
CVE-2026-62897 Published on August 11, 2026
.NET Framework Remote Code Execution Vulnerability
Integer overflow or wraparound in .NET Framework allows an unauthorized attacker to execute code locally.
Weakness Type
Integer Overflow or Wraparound
The software performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. An integer overflow or wraparound occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may wrap to become a very small or negative number. While this may be intended behavior in circumstances that rely on wrapping, it can have security consequences if the wrap is unexpected. This is especially the case if the integer overflow can be triggered using user-supplied inputs. This becomes security-critical when the result is used to control looping, make a security decision, or determine the offset or size in behaviors such as memory allocation, copying, concatenation, etc.
Products Associated with CVE-2026-62897
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Affected Versions
Microsoft .NET 10.0:- Version 10.0.0 and below 10.0.11 is affected.
- Version 8.0.0 and below 8.0.30 is affected.
- Version 9.0.0 and below 9.0.19 is affected.
- Version 3.5.0 and below 2.0.50727.9183 & 3.0.30729.9169 is affected.
- Version 4.7.0 and below 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4144.0 is affected.
- Version 4.8.0 and below 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0 is affected.
- Version 4.8.0.0 and below 4.8.9344.0 is affected.
- Version 17.14.0 and below 17.14.38 is affected.
- Version 18.0 and below 18.8.3 is affected.