Oct 2026: .NET Framework Tampering Vulnerability
CVE-2026-97801 Published on October 13, 2026
.NET Framework Tampering Vulnerability
Improper validation of specified type of input in .NET Framework allows an unauthorized attacker to perform tampering over a network.
Weakness Type
Improper Validation of Specified Type of Input
The product receives input that is expected to be of a certain type, but it does not validate or incorrectly validates that the input is actually of the expected type.
Products Associated with CVE-2026-97801
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Affected Versions
Microsoft .NET Framework 3.5:- Version 3.5.0 and below 2.0.50727.9188 AND 3.0.30729.9171 is affected.
- Version 3.0.0.0 and below 2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0 is affected.
- Version 4.7.0 and below 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0 is affected.
- Version 4.8.0 and below 2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0 is affected.
- Version 4.8.1 and below 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0 is affected.
- Version 4.7.0 and below 4.7.4150.0 is affected.
- Version 4.8.0 and below 4.8.4811.0 is affected.
- Version 4.8.0.0 and below 4.8.9363.0 is affected.