CVE-2026-50646: CWE-693: Protection Mechanism Failure in Microsoft .NET 8.0
Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.
AI Analysis
Technical Summary
This vulnerability, identified as CVE-2026-50646 and classified under CWE-693 (Protection Mechanism Failure), affects Microsoft .NET Framework version 8.0.0. It allows an unauthorized attacker to execute code locally due to a failure in the protection mechanisms implemented in the framework. The CVSS v3.1 base score is 7.8, indicating high severity, with attack vector local, low attack complexity, no privileges required, user interaction required, and impacts to confidentiality, integrity, and availability all rated high. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation of this vulnerability could allow an unauthorized local attacker to execute arbitrary code with high impact on confidentiality, integrity, and availability of the affected system. This could lead to full compromise of the affected .NET environment on the local machine.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. Users and administrators should apply the provided patch from the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50646 to remediate the issue.
CVE-2026-50646: CWE-693: Protection Mechanism Failure in Microsoft .NET 8.0
Description
Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.
CVSS v3.1
Score 7.8high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CVE-2026-50646 and classified under CWE-693 (Protection Mechanism Failure), affects Microsoft .NET Framework version 8.0.0. It allows an unauthorized attacker to execute code locally due to a failure in the protection mechanisms implemented in the framework. The CVSS v3.1 base score is 7.8, indicating high severity, with attack vector local, low attack complexity, no privileges required, user interaction required, and impacts to confidentiality, integrity, and availability all rated high. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation of this vulnerability could allow an unauthorized local attacker to execute arbitrary code with high impact on confidentiality, integrity, and availability of the affected system. This could lead to full compromise of the affected .NET environment on the local machine.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. Users and administrators should apply the provided patch from the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50646 to remediate the issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-05T14:33:50.830Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50646","vendor":"Microsoft"}]
Threat ID: 6a56962868715ace431dca01
Added to database: 07/14/2026, 20:03:52 UTC
Last enriched: 08/13/2026, 15:09:15 UTC
Last updated: 08/26/2026, 23:19:40 UTC
Views: 126
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