A system does not present an appropriate legal message or warning to a user who is accessing it.
Conclusion & alert: CVE-1999-0590 is rated High Risk (70.4/100): CVSS Critical severity, with high exploitation likelihood (EPSS 10.34%, 93th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. Mandatory action: High exploitation likelihood—assess exposure and prioritize 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 | 2025-10-23 | 12.39% | 10.34% | -2.05% |
| 2 | 2025-10-01 | 10.29% | 12.39% | +2.10% |
| 3 | 2025-03-30 | — | 10.29% | — |
Full EPSS history (8 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 10.0 | 2.0 | HIGH |
|
10.0 | 10.0 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| apple | macos | — | cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* |
| linux | linux_kernel | 2.6.20.1 | cpe:2.3:o:linux:linux_kernel:2.6.20.1:*:*:*:*:*:*:* |
| microsoft | windows_2000 | — | cpe:2.3:o:microsoft:windows_2000:*:*:*:*:*:*:*:* |
| microsoft | windows_95 | — | cpe:2.3:o:microsoft:windows_95:*:*:*:*:*:*:*:* |
| microsoft | windows_98 | — | cpe:2.3:o:microsoft:windows_98:*:gold:*:*:*:*:*:* |
| microsoft | windows_nt | 3.5.1 | cpe:2.3:o:microsoft:windows_nt:3.5.1:*:*:*:*:*:*:* |
| microsoft | windows_nt | 3.5.1 | cpe:2.3:o:microsoft:windows_nt:3.5.1:sp1:*:*:*:*:*:* |
| microsoft | windows_nt | 3.5.1 | cpe:2.3:o:microsoft:windows_nt:3.5.1:sp2:*:*:*:*:*:* |
| microsoft | windows_nt | 3.5.1 | cpe:2.3:o:microsoft:windows_nt:3.5.1:sp3:*:*:*:*:*:* |
| microsoft | windows_nt | 3.5.1 | cpe:2.3:o:microsoft:windows_nt:3.5.1:sp5:*:*:*:*:*:* |
| microsoft | windows_nt | 4.0 | cpe:2.3:o:microsoft:windows_nt:4.0:*:*:*:*:*:*:* |