CVE-2026-50659: CWE-116: Improper Encoding or Escaping of Output in Microsoft .NET 10.0
Improper encoding or escaping of output in .NET allows an authorized attacker to perform spoofing over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-50659) in Microsoft .NET 10.0 is caused by improper encoding or escaping of output, categorized under CWE-116. It enables an attacker with authorized access to conduct spoofing attacks over a network. The CVSS 3.1 vector indicates network attack vector, low attack complexity, requiring low privileges and no user interaction, with no confidentiality impact but high integrity impact and no availability impact. Microsoft has published an official fix for this vulnerability.
Potential Impact
An authorized attacker can exploit this vulnerability to spoof network communications, potentially misleading systems or users by injecting or manipulating output data. This impacts the integrity of data or communications but does not affect confidentiality or availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the vendor-provided patch as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50659 to remediate this vulnerability.
CVE-2026-50659: CWE-116: Improper Encoding or Escaping of Output in Microsoft .NET 10.0
Description
Improper encoding or escaping of output in .NET allows an authorized attacker to perform spoofing over a network.
CVSS v3.1
Score 6.5medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-50659) in Microsoft .NET 10.0 is caused by improper encoding or escaping of output, categorized under CWE-116. It enables an attacker with authorized access to conduct spoofing attacks over a network. The CVSS 3.1 vector indicates network attack vector, low attack complexity, requiring low privileges and no user interaction, with no confidentiality impact but high integrity impact and no availability impact. Microsoft has published an official fix for this vulnerability.
Potential Impact
An authorized attacker can exploit this vulnerability to spoof network communications, potentially misleading systems or users by injecting or manipulating output data. This impacts the integrity of data or communications but does not affect confidentiality or availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the vendor-provided patch as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50659 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-05T14:33:50.831Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50659","vendor":"Microsoft"}]
Threat ID: 6a56962968715ace431dcac3
Added to database: 07/14/2026, 20:03:53 UTC
Last enriched: 08/13/2026, 15:12:07 UTC
Last updated: 08/28/2026, 11:04:21 UTC
Views: 87
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