An issue was discovered in Optimizely EPiServer.CMS.Core before 12.32.0. A medium-severity vulnerability exists in the CMS, where the application does not properly validate uploaded files. This allows the upload of potentially malicious file types, including .docm .html. When accessed by application users, these files can be used to execute malicious actions or compromise users' systems.
Conclusion & alert: CVE-2025-22389 is rated Moderate Risk (44.8/100): CVSS High severity, with low exploitation likelihood (EPSS 0.47%). Mandatory action: Review affected assets and schedule 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 | 2026-06-15 | 0.57% | 0.47% | -0.10% |
| 2 | 2026-05-26 | 0.42% | 0.57% | +0.15% |
| 3 | 2026-02-12 | — | 0.42% | — |
Full EPSS history (8 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.0 | 3.1 | HIGH |
|
2.1 | 5.9 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| optimizely | optimizely_cms | < 12.32.0 | cpe:2.3:a:optimizely:optimizely_cms:*:*:*:*:*:*:*:* |