CVSS 3.1
8.8 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2026-109464 Microsoft Office SharePoint Remote Code Execution Vulnerability
High (8.8) in microsoft microsoft sharepoint server subscription edition. EPSS 1.9% estimated probability of exploitation activity in the next 30 days.
On this page
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Severity
- EPSS
- 1.9% estimated probability of exploitation activity in the next 30 days; 80th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
- CISA's assessment (SSVC)
- Exploitation: none · Automatable: no · Technical impact: total, assessed 2026-11-10. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
- CWE
- CWE-502 Deserialization of Untrusted Data
- OWASP Top 10
- A08:2025 Software or Data Integrity Failures
- Published
- Modified
- Assigned by
- microsoft (CNA)
- NVD analysis
- Awaiting analysis
- Record from
- the NVD, synced
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Affected
- microsoft:microsoft sharepoint server subscription edition
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| Microsoft SharePoint Server Subscription Edition | from 16.0.0 before 16.0.20326.20278 |
Attack patterns (CAPEC)
- CAPEC-586 Object Injection Likelihood: Medium · Severity: High
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.