ISOS firmwares from versions 1.81 to 2.00 contain hardcoded credentials from embedded StreamX installer that integrators are not forced to change.
Conclusion & alert: CVE-2022-4780 is rated Low Risk (19.7/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.15%). Mandatory action: Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.
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 | 0.06% | 0.15% | +0.09% |
| 2 | 2025-03-17 | 0.04% | 0.06% | +0.01% |
| 3 | 2023-03-07 | — | 0.04% | — |
Full EPSS history (4 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.5 | 3.1 | MEDIUM |
|
1.0 | 3.4 | [email protected] |
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| elvexys | isos_firmware | >= 1.81, <= 2.00 | cpe:2.3:o:elvexys:isos_firmware:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://elvexys.com/products/xpg-gateway-rtu-protocol-converter/isos-release-notes/ | Release Notes Vendor Advisory |