Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Conclusion & alert: CVE-2025-47166 is rated High Exploit Risk (85.7/100): CVSS High severity, with high exploitation likelihood (EPSS 12.33%, 96th percentile). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.99% over the last day, indicating growing attacker interest. Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| 52349 | exploit_db | edb | 2025-07-02 | Exploit-DB ↗ |
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 | 2026-06-15 | 10.35% | 12.33% | +1.99% |
| 2 | 2026-06-05 | 11.46% | 10.35% | -1.11% |
| 3 | 2026-05-13 | — | 11.46% | — |
Full EPSS history (22 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-2025-47166 | Vendor Advisory |