Argument injection vulnerability in the ping function in Ping.php in the Net_Ping package before 2.4.5 for PEAR allows remote attackers to execute arbitrary shell commands via the host parameter. NOTE: this has also been reported as a shell metacharacter problem.
Conclusion & alert: CVE-2009-4024 is rated High Risk (75.9/100): CVSS Critical severity, with high exploitation likelihood (EPSS 6.13%, 93th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +3.48% over the last day, indicating growing attacker interest. 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 | 2026-06-15 | 2.65% | 6.13% | +3.48% |
| 2 | 2026-02-14 | 2.81% | 2.65% | -0.16% |
| 3 | 2025-03-30 | — | 2.81% | — |
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 | priority | summary | link |
|---|---|---|---|
ubuntu
|
medium | CVE-2009-4024 medium priority: Ubuntu including 1 source packages (php-net-ping), 6 status rows across 6 suites (dapper, hardy, intrepid, jaunty, karmic, upstream): released 4, DNE 1, needs-triage 1. | https://ubuntu.com/security/CVE-2009-4024 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| pear | pear | <= 2.4.4 | cpe:2.3:a:pear:pear:*:*:*:*:*:*:*:* |
| pear | pear | 0.1 | cpe:2.3:a:pear:pear:0.1:*:*:*:*:*:*:* |
| pear | pear | 1.0 | cpe:2.3:a:pear:pear:1.0:*:*:*:*:*:*:* |
| pear | pear | 1.0.1 | cpe:2.3:a:pear:pear:1.0.1:*:*:*:*:*:*:* |
| pear | pear | 2.1 | cpe:2.3:a:pear:pear:2.1:*:*:*:*:*:*:* |
| pear | pear | 2.2 | cpe:2.3:a:pear:pear:2.2:*:*:*:*:*:*:* |
| pear | pear | 2.3 | cpe:2.3:a:pear:pear:2.3:*:*:*:*:*:*:* |
| pear | pear | 2.4 | cpe:2.3:a:pear:pear:2.4:*:*:*:*:*:*:* |
| pear | pear | 2.4.1 | cpe:2.3:a:pear:pear:2.4.1:*:*:*:*:*:*:* |
| pear | pear | 2.4.2 | cpe:2.3:a:pear:pear:2.4.2:*:*:*:*:*:*:* |
| pear | pear | 2.4.3 | cpe:2.3:a:pear:pear:2.4.3:*:*:*:*:*:*:* |