Improper access control vulnerability exists in the specific folder of SKYSEA Client View versions from Ver.16.100 prior to Ver.19.2. If this vulnerability is exploited, an arbitrary file may be placed in the specific folder by a user who can log in to the PC where the product's Windows client is installed. In case the file is a specially crafted DLL file, arbitrary code may be executed with SYSTEM privilege.
Conclusion & alert: CVE-2024-21805 is rated Moderate Risk (42.1/100): CVSS High severity, with low exploitation likelihood (EPSS 0.12%). 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 | 2025-11-21 | 0.05% | 0.12% | +0.07% |
| 2 | 2025-11-18 | 0.08% | 0.05% | -0.04% |
| 3 | 2025-05-24 | — | 0.08% | — |
Full EPSS history (6 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| skygroup | skysea_client_view | >= 16.100.06f, < 19.300.09h | cpe:2.3:a:skygroup:skysea_client_view:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://jvn.jp/en/jp/JVN54451757/ | Third Party Advisory |
| https://www.skyseaclientview.net/news/240307_01/ | Vendor Advisory |