The H.323 protocol agent in StoneSoft firewall engine 2.2.8 and earlier allows remote attackers to cause a denial of service (crash) via crafted H.323 packets.
Conclusion & alert: CVE-2004-0498 is rated Moderate Risk (42.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.57%). 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 | 2025-03-30 | 0.79% | 0.57% | -0.22% |
| 2 | 2025-03-29 | 0.57% | 0.79% | +0.22% |
| 3 | 2025-03-17 | — | 0.57% | — |
Full EPSS history (6 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| stonesoft | firewall_engine | <= 2.2.8 | cpe:2.3:a:stonesoft:firewall_engine:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://www.stonesoft.com/support/Security_Advisories/6735.html | Vendor Advisory |
| http://www.uniras.gov.uk/niscc/docs/re-20041026-00956.pdf?lang=en | Vendor Advisory |