Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Conclusion & alert: CVE-2025-47163 is rated Moderate Risk (63.2/100): CVSS High severity, with high exploitation likelihood (EPSS 13.94%, 94th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-05-10 | 23.26% | 13.94% | -9.32% |
| 2 | 2026-04-06 | 18.20% | 23.26% | +5.06% |
| 3 | 2026-03-27 | — | 18.20% | — |
Full EPSS history (19 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| microsoft | sharepoint_enterprise_server | 2016 | cpe:2.3:a:microsoft:sharepoint_enterprise_server:2016:*:*:*:*:*:*:* |
| microsoft | sharepoint_server | < 16.0.18526.20396 | cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:* |
| microsoft | sharepoint_server | 2019 | cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-47163 | Vendor Advisory |