Buffer overflow in the Internet Key Exchange version 1 (IKEv1) implementation in ADTRAN NetVanta before 10.03.03.E might allow remote attackers to have an unknown impact via crafted IKE packets, as demonstrated by the PROTOS ISAKMP Test Suite for IKEv1.
Conclusion & alert: CVE-2005-4566 is rated High Risk (71.3/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.78%). Core evidence: EPSS rose +1.78% 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 | 1.00% | 2.78% | +1.78% |
| 2 | 2025-03-30 | 1.54% | 1.00% | -0.55% |
| 3 | 2025-03-29 | — | 1.54% | — |
Full EPSS history (9 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] |
| URL | Tags |
|---|---|
| http://secunia.com/advisories/18179 | Patch Vendor Advisory |
| http://www.securityfocus.com/bid/16028 | Patch |
| http://www.vupen.com/english/advisories/2005/3027 | |
| http://www2.adtran.com/support/isakmp/ | Patch |