Description
Improper encoding or escaping of output in .NET allows an authorized attacker to perform spoofing over a network.
Published: 2026-07-14
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-74jp-vm22-8q8x Microsoft Security Advisory CVE-2026-50659 – .NET Spoofing Vulnerability
Ubuntu USN Ubuntu USN USN-8553-1 .NET vulnerabilities
History

Wed, 05 Aug 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft microsoft Visual Studio 2022
Vendors & Products Microsoft microsoft Visual Studio 2022

Thu, 23 Jul 2026 12:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat
Redhat enterprise Linux
Redhat hummingbird
Weaknesses CWE-838
CPEs cpe:/a:redhat:enterprise_linux:8
cpe:/a:redhat:enterprise_linux:9
cpe:/a:redhat:hummingbird:1
cpe:/o:redhat:enterprise_linux:10.2
Vendors & Products Redhat
Redhat enterprise Linux
Redhat hummingbird
References
Metrics threat_severity

None

threat_severity

Moderate


Wed, 22 Jul 2026 16:00:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft .net Framework
CPEs cpe:2.3:a:microsoft:.net_framework:*:*:*:*:*:*:*:*
Vendors & Products Microsoft .net Framework

Tue, 14 Jul 2026 22:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 14 Jul 2026 20:00:00 +0000

Type Values Removed Values Added
Description Improper encoding or escaping of output in .NET allows an authorized attacker to perform spoofing over a network.
Title .NET Spoofing Vulnerability
First Time appeared Microsoft
Microsoft .net
Microsoft visual Studio 2022
Microsoft visual Studio 2026
Weaknesses CWE-116
CPEs cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft .net
Microsoft visual Studio 2022
Microsoft visual Studio 2026
References
Metrics cvssV3_1

{'score': 6.5, 'vector': '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'}


Subscriptions

Apple Macos
Linux Linux Kernel
Microsoft .net .net Framework Microsoft Visual Studio 2022 Visual Studio 2022 Visual Studio 2026 Windows Windows 10 1607 Windows 10 1809 Windows 10 21h2 Windows 10 22h2 Windows 11 23h2 Windows 11 24h2 Windows 11 25h2 Windows 11 26h1 Windows Server 2012 Windows Server 2016 Windows Server 2019 Windows Server 2022
Redhat Enterprise Linux Hummingbird
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-08-14T17:23:39.542Z

Reserved: 2026-06-05T14:33:50.831Z

Link: CVE-2026-50659

cve-icon Vulnrichment

Updated: 2026-07-14T20:39:40.283Z

cve-icon NVD

Status : Analyzed

Published: 2026-07-14T20:17:38.917

Modified: 2026-07-24T13:39:30.693

Link: CVE-2026-50659

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-07-14T19:40:15Z

Links: CVE-2026-50659 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-05T10:00:03Z

Weaknesses