CVE-2026-50522: CWE-502: Deserialization of Untrusted Data in Microsoft Microsoft SharePoint Enterprise Server 2016
CVE-2026-50522 is a critical vulnerability in Microsoft SharePoint Enterprise Server 2016 involving deserialization of untrusted data. This flaw allows an unauthorized attacker to execute arbitrary code remotely over a network without user interaction or privileges. The vulnerability has a CVSS score of 9.8, indicating severe impact on confidentiality, integrity, and availability. An official patch is available to remediate this issue.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-50522) affects Microsoft SharePoint Enterprise Server 2016 version 16.0.0 and is caused by unsafe deserialization of untrusted data. Exploitation enables remote code execution by an attacker without requiring privileges or user interaction. The vulnerability is classified under CWE-502 and has a critical CVSS 3.1 base score of 9.8. Microsoft has released an official fix to address this security issue.
Potential Impact
Successful exploitation of this vulnerability allows an attacker to execute arbitrary code remotely, leading to full compromise of the affected SharePoint server. This impacts confidentiality, integrity, and availability of the system and any data it manages.
Mitigation Recommendations
An official patch is available from Microsoft for SharePoint Enterprise Server 2016 version 16.0.0. It is strongly recommended to apply the vendor-provided update immediately to remediate this vulnerability.
CVE-2026-50522: CWE-502: Deserialization of Untrusted Data in Microsoft Microsoft SharePoint Enterprise Server 2016
Description
CVE-2026-50522 is a critical vulnerability in Microsoft SharePoint Enterprise Server 2016 involving deserialization of untrusted data. This flaw allows an unauthorized attacker to execute arbitrary code remotely over a network without user interaction or privileges. The vulnerability has a CVSS score of 9.8, indicating severe impact on confidentiality, integrity, and availability. An official patch is available to remediate this issue.
CVSS v3.1
Score 9.8critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-50522) affects Microsoft SharePoint Enterprise Server 2016 version 16.0.0 and is caused by unsafe deserialization of untrusted data. Exploitation enables remote code execution by an attacker without requiring privileges or user interaction. The vulnerability is classified under CWE-502 and has a critical CVSS 3.1 base score of 9.8. Microsoft has released an official fix to address this security issue.
Potential Impact
Successful exploitation of this vulnerability allows an attacker to execute arbitrary code remotely, leading to full compromise of the affected SharePoint server. This impacts confidentiality, integrity, and availability of the system and any data it manages.
Mitigation Recommendations
An official patch is available from Microsoft for SharePoint Enterprise Server 2016 version 16.0.0. It is strongly recommended to apply the vendor-provided update immediately to remediate this vulnerability.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-ww8x-9jc5-9v7f
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-50522"]
- Ecosystems
- []
- Database Specific Severity
- CRITICAL
- Cvss Version
- 3.1
- Remediation Level
- official-fix
Threat ID: 6a6150e79c2644c7f8da2030
Added to database: 07/22/2026, 23:23:19 UTC
Last enriched: 07/31/2026, 00:58:37 UTC
Last updated: 07/31/2026, 19:24:47 UTC
Views: 8
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