The https web interfaces on the ATEN KH1516i IP KVM switch with firmware 1.0.063, the KN9116 IP KVM switch with firmware 1.1.104, and the PN9108 power-control unit have a hardcoded SSL private key, which makes it easier for remote attackers to decrypt https sessions by extracting this key from their own switch and then sniffing network traffic to a switch owned by a different customer.
Conclusion & alert: CVE-2009-1477 is rated High Risk (69.3/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.15%). Core evidence: EPSS rose +1.42% 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 | 0.73% | 2.15% | +1.42% |
| 2 | 2025-10-16 | 0.81% | 0.73% | -0.09% |
| 3 | 2025-03-30 | — | 0.81% | — |
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] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| aten | kh1516i_ip_kvm_switch | 1.0.063 | cpe:2.3:h:aten:kh1516i_ip_kvm_switch:1.0.063:*:*:*:*:*:*:* |
| aten | kn9116_ip_kvm_switch | 1.1.104 | cpe:2.3:h:aten:kn9116_ip_kvm_switch:1.1.104:*:*:*:*:*:*:* |
| aten | pn9108_power_over_the_net | — | cpe:2.3:h:aten:pn9108_power_over_the_net:*:*:*:*:*:*:*:* |