Multiple unspecified vulnerabilities in Nortel Communication Server 1000 4.50.x allow remote attackers to execute arbitrary commands to gain privileges, obtain sensitive information, or cause a denial of service via unknown vectors.
Conclusion & alert: CVE-2008-6578 is rated High Risk (69/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.18%). 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 | 2025-08-21 | 2.44% | 2.18% | -0.26% |
| 2 | 2025-03-30 | 3.13% | 2.44% | -0.69% |
| 3 | 2025-03-29 | — | 3.13% | — |
Full EPSS history (7 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] |