Multiple buffer overflows in filter command in Elm 2.4 allows attackers to execute arbitrary commands via (1) long From: headers, (2) long Reply-To: headers, or (3) via a long -f (filterfile) command line argument.
Conclusion & alert: CVE-1999-1334 is rated Moderate Risk (56.6/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.92%). 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 | 2026-01-02 | 0.74% | 0.92% | +0.18% |
| 2 | 2025-03-30 | 0.82% | 0.74% | -0.09% |
| 3 | 2025-03-29 | — | 0.82% | — |
Full EPSS history (8 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| elm_development_group | elm | 2.4 | cpe:2.3:a:elm_development_group:elm:2.4:*:*:*:*:*:*:* |