CVE-2026-69273: CWE-284: Improper Access Control in Microsoft Microsoft SharePoint Server Subscription Edition
Description
CVE-2026-69273 is a high-severity vulnerability in Microsoft SharePoint Server Subscription Edition involving improper access control. It allows an authorized attacker to execute code remotely over a network without user interaction. The vulnerability affects versions from 16.0.0 up to but not including 16.0.20326.20082. An official fix is available from Microsoft.
CVSS v3.1
Score 8.8high
Affected software
Microsoft
Microsoft SharePoint Server Subscription Edition
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CWE-284 (Improper Access Control), exists in Microsoft SharePoint Server Subscription Edition. It permits an attacker with authorized access to execute arbitrary code remotely over the network. The CVSS 3.1 base score is 8.8, reflecting high impact on confidentiality, integrity, and availability. The vulnerability affects versions >=16.0.0 and <16.0.20326.20082. Microsoft has released an official patch to remediate this issue.
Potential Impact
Successful exploitation allows an authorized attacker to execute arbitrary code remotely, potentially leading to full compromise of the affected SharePoint server, including complete control over confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the security update for Microsoft SharePoint Server Subscription Edition to versions 16.0.20326.20082 or later to remediate this vulnerability. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-03T20:44:03.597Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69273","vendor":"Microsoft"}]
Threat ID: 6aa044ddacd9273b49fa7d6f
Added to database: 09/08/2026, 17:24:45 UTC
Last enriched: 10/16/2026, 20:59:00 UTC
Last updated: 10/23/2026, 15:10:14 UTC
Views: 42
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