CVE-2026-50649: CWE-502: Deserialization of Untrusted Data in Microsoft .NET 8.0
Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-50649) in Microsoft .NET 8.0 is classified as CWE-502: Deserialization of Untrusted Data. It enables an attacker to execute arbitrary code locally by exploiting unsafe deserialization mechanisms. The CVSS 3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability, with low attack complexity and no privileges required but user interaction needed. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation allows an attacker to execute code locally on affected systems, potentially leading to full compromise of the affected environment's confidentiality, integrity, and availability. The vulnerability requires local access and user interaction but does not require privileges.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the patch provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50649 to remediate this vulnerability.
CVE-2026-50649: CWE-502: Deserialization of Untrusted Data in Microsoft .NET 8.0
Description
Deserialization of untrusted data in .NET 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 (CVE-2026-50649) in Microsoft .NET 8.0 is classified as CWE-502: Deserialization of Untrusted Data. It enables an attacker to execute arbitrary code locally by exploiting unsafe deserialization mechanisms. The CVSS 3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability, with low attack complexity and no privileges required but user interaction needed. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation allows an attacker to execute code locally on affected systems, potentially leading to full compromise of the affected environment's confidentiality, integrity, and availability. The vulnerability requires local access and user interaction but does not require privileges.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the patch provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50649 to remediate this vulnerability.
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-2026-50649","vendor":"Microsoft"}]
Threat ID: 6a568f2868715ace43148ca0
Added to database: 07/14/2026, 19:34:00 UTC
Last enriched: 07/14/2026, 19:47:34 UTC
Last updated: 07/14/2026, 20:03:47 UTC
Views: 4
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