Internet Explorer in Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows an attacker to bypass Device Guard User Mode Code Integrity (UMCI) policies due to Internet Explorer failing to validate UMCI policies, aka "Internet Explorer Security Feature Bypass Vulnerability".
Conclusion & alert: CVE-2017-8625 is rated High Exploit Risk (89.7/100): CVSS High severity, with high exploitation likelihood (EPSS 69.82%, 99th percentile). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +22.25% 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 |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | 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 | 2025-11-29 | 47.57% | 69.82% | +22.25% |
| 2 | 2025-11-21 | 23.88% | 47.57% | +23.69% |
| 3 | 2025-11-18 | — | 23.88% | — |
Full EPSS history (22 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.8 | 3.0 | HIGH |
|
2.8 | 5.9 | [email protected] |
| 6.8 | 2.0 | MEDIUM |
|
8.6 | 6.4 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| microsoft | internet_explorer | 11 | cpe:2.3:a:microsoft:internet_explorer:11:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://www.securityfocus.com/bid/100063 | Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1039112 | Third Party Advisory VDB Entry |
| https://oddvar.moe/2017/08/13/bypassing-device-guard-umci-using-chm-cve-2017-8625/ | |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8625 | Patch Vendor Advisory |
| https://posts.specterops.io/umci-vs-internet-explorer-exploring-cve-2017-8625-3946536c6442 | Exploit Third Party Advisory |