CVE-2026-50659: medium-severity vulnerability in Microsoft .NET Framework 3.5
.NET Spoofing Vulnerability
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.7%
Improper encoding or escaping of output in .NET allows an authorized attacker to perform spoofing over a network.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C
Affected products
Microsoft · Microsoft .NET Framework 3.5Microsoft · Microsoft .NET Framework 3.5 AND 4.7.2Microsoft · Microsoft .NET Framework 3.5 AND 4.8Microsoft · Microsoft .NET Framework 3.5 AND 4.8.1Microsoft · Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2Microsoft · Microsoft .NET Framework 4.8Microsoft · Microsoft .NET Framework 4.8.1Microsoft · Microsoft Visual Studio 2022 version 17.12Microsoft · Microsoft Visual Studio 2022 version 17.14Microsoft · Microsoft Visual Studio 2026 version 18.7Microsoft · .NET 10.0 runtimeMicrosoft · .NET 8.0 runtimeMicrosoft · .NET 9.0 runtimeRelated CVEs — Microsoft .NET Framework 3.5
In the same product, most dangerous first.
CVE-2020-0646CRITICALCVE-2020-0646EPSS 99.2%KEVCVE-2024-29059HIGH.NET Framework Information Disclosure VulnerabilityEPSS 98.6%KEVCVE-2020-1147HIGHCVE-2020-1147EPSS 95.8%KEVCVE-2023-36899HIGHASP.NET Elevation of Privilege VulnerabilityEPSS 76.7%CVE-2020-0605—CVE-2020-0605EPSS 17.2%CVE-2020-0606—CVE-2020-0606EPSS 17.2%