CVE-2026-58277: CWE-285: Improper Authorization in Microsoft Microsoft SharePoint Enterprise Server 2016
Improper authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
AI Analysis
Technical Summary
This vulnerability in Microsoft SharePoint Enterprise Server 2016 (version 16.0.0) involves improper authorization controls, enabling an attacker with some level of authorization to escalate their privileges remotely. The CVSS 3.1 vector indicates network attack vector, low attack complexity, privileges required, no user interaction, and high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An attacker who is authorized on the network can exploit this vulnerability to gain elevated privileges, potentially leading to full compromise of the SharePoint server's confidentiality, integrity, and availability. This could allow unauthorized access to sensitive data and administrative functions.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided by Microsoft as detailed in their advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58277 to remediate this vulnerability.
CVE-2026-58277: CWE-285: Improper Authorization in Microsoft Microsoft SharePoint Enterprise Server 2016
Description
Improper 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 in Microsoft SharePoint Enterprise Server 2016 (version 16.0.0) involves improper authorization controls, enabling an attacker with some level of authorization to escalate their privileges remotely. The CVSS 3.1 vector indicates network attack vector, low attack complexity, privileges required, no user interaction, and high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An attacker who is authorized on the network can exploit this vulnerability to gain elevated privileges, potentially leading to full compromise of the SharePoint server's confidentiality, integrity, and availability. This could allow unauthorized access to sensitive data and administrative functions.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided by Microsoft as detailed in their advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58277 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-29T21:59:30.870Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58277","vendor":"Microsoft"}]
Threat ID: 6a5676bf68715ace43f0b08d
Added to database: 07/14/2026, 17:49:51 UTC
Last enriched: 07/14/2026, 18:24:33 UTC
Last updated: 07/14/2026, 23:27:10 UTC
Views: 6
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