A vulnerability exists in the Aptsys POS Platform Web Services module thru 2025-05-28, which exposes internal API testing tools to unauthenticated users. By accessing specific URLs, an attacker is presented with a directory-style index listing all available backend services and POS web services, each with an HTML form for submitting test input. These panels are intended for developer use, but are accessible in production environments with no authentication or session validation. This grants any external actor the ability to discover, test, and execute API endpoints that perform critical functions including but not limited to user transaction retrieval, credit adjustments, POS actions, and internal data queries.
Conclusion & alert: CVE-2025-52024 is rated Moderate Risk (43.2/100): CVSS Critical severity, with low exploitation likelihood (EPSS 0.05%). 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 | 2026-04-01 | 0.01% | 0.05% | +0.04% |
| 2 | 2026-01-24 | — | 0.01% | — |
Full EPSS history (2 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.4 | 3.1 | CRITICAL |
|
3.9 | 5.5 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| aptsys | gemscms_backend | <= 2025-05-28 | cpe:2.3:a:aptsys:gemscms_backend:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://aptsys.com | Product |
| https://gist.github.com/ReverseThatApp/4a6be2b9b2ba39d38c35c8753e0afd39 | Third Party Advisory |