Heap-based buffer overflow in ASN.1 decoding library in Check Point VPN-1 products, when Aggressive Mode IKE is implemented, allows remote attackers to execute arbitrary code by initiating an IKE negotiation and then sending an IKE packet with malformed ASN.1 data.
Conclusion & alert: CVE-2004-0699 is rated Moderate Risk (64.3/100): CVSS High severity, with high exploitation likelihood (EPSS 20.61%, 96th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. 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 | 2026-05-20 | 19.80% | 20.61% | +0.81% |
| 2 | 2025-08-10 | 17.80% | 19.80% | +2.00% |
| 3 | 2025-03-30 | — | 17.80% | — |
Full EPSS history (9 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 |
|---|---|---|---|
| checkpoint | firewall-1 | 4.1 | cpe:2.3:a:checkpoint:firewall-1:4.1:sp6:*:*:*:*:*:* |
| checkpoint | vpn-1 | — | cpe:2.3:a:checkpoint:vpn-1:*:*:*:*:*:*:*:* |