vchkpw program in vpopmail before version 4.8 does not properly cleanse an untrusted format string used in a call to syslog, which allows remote attackers to cause a denial of service via a USER or PASS command that contains arbitrary formatting directives.
Conclusion & alert: CVE-2000-0583 is rated Moderate Risk (46.7/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.67%). 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 | 2026-06-15 | 0.74% | 1.67% | +0.93% |
| 2 | 2025-03-30 | 0.76% | 0.74% | -0.02% |
| 3 | 2025-03-29 | — | 0.76% | — |
Full EPSS history (7 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| inter7 | vpopmail_vchkpw | 4.5 | cpe:2.3:a:inter7:vpopmail_vchkpw:4.5:*:*:*:*:*:*:* |
| inter7 | vpopmail_vchkpw | 4.7 | cpe:2.3:a:inter7:vpopmail_vchkpw:4.7:*:*:*:*:*:*:* |