CVE-2026-50659

MEDIUM

Microsoft .NET 10.0 - .NET Spoofing Vulnerability

Title source: rule
STIX 2.1

Description

Improper encoding or escaping of output in .NET allows an authorized attacker to perform spoofing over a network.

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
.NET Spoofing Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50659

Scores

CVSS v3 6.5
EPSS 0.0055
EPSS Percentile 42.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-116
Status published
Products (50)
microsoft/.net 8.0.0 - 8.0.29
Microsoft/.NET 10.0 10.0.0 - 10.0.10
Microsoft/.NET 10.0 10.0.0 - 10.0.6
Microsoft/.NET 8.0 8.0.0 - 8.0.29
Microsoft/.NET 9.0 9.0.0 - 9.0.18
microsoft/.net_framework 4.8.1
microsoft/.net_framework 4.8
microsoft/.net_framework 4.6.2
microsoft/.net_framework 4.7
microsoft/.net_framework 4.7.1
... and 40 more
Published Jul 14, 2026
Tracked Since Jul 15, 2026