CVE-2026-55052: CWE-862: Missing Authorization in Microsoft Microsoft SharePoint Enterprise Server 2016
Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-55052) in Microsoft SharePoint Enterprise Server 2016 involves missing authorization controls, classified under CWE-862. It enables an attacker with some level of authorization to escalate privileges remotely over a network. The CVSS 3.1 vector indicates low attack complexity, no user interaction required, and high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to address this issue.
Potential Impact
An attacker who is already authorized on the network can exploit this vulnerability to elevate their privileges, potentially gaining higher access rights than intended. This can lead to full compromise of the affected SharePoint server, impacting confidentiality, integrity, and availability of data and services.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55052 to remediate this vulnerability.
CVE-2026-55052: CWE-862: Missing Authorization in Microsoft Microsoft SharePoint Enterprise Server 2016
Description
Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
CVSS v3.1
Score 8.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-55052) in Microsoft SharePoint Enterprise Server 2016 involves missing authorization controls, classified under CWE-862. It enables an attacker with some level of authorization to escalate privileges remotely over a network. The CVSS 3.1 vector indicates low attack complexity, no user interaction required, and high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to address this issue.
Potential Impact
An attacker who is already authorized on the network can exploit this vulnerability to elevate their privileges, potentially gaining higher access rights than intended. This can lead to full compromise of the affected SharePoint server, impacting confidentiality, integrity, and availability of data and services.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55052 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-16T14:13:49.836Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55052","vendor":"Microsoft"}]
Threat ID: 6a5676b368715ace43f0aaa1
Added to database: 07/14/2026, 17:49:39 UTC
Last enriched: 07/14/2026, 19:20:17 UTC
Last updated: 07/15/2026, 04:18:39 UTC
Views: 5
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