HTTPServerILServlet.java in JMS over HTTP Invocation Layer of the JbossMQ implementation, which is enabled by default in Red Hat Jboss Application Server <= Jboss 4.X does not restrict the classes for which it performs deserialization, which allows remote attackers to execute arbitrary code via crafted serialized data.
Conclusion & alert: CVE-2017-7504 is rated High Risk (75/100): CVSS Critical severity, with high exploitation likelihood (EPSS 90.28%, 100th 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 | 2026-03-04 | 89.31% | 90.28% | +0.97% |
| 2 | 2026-03-01 | 90.28% | 89.31% | -0.97% |
| 3 | 2026-02-21 | — | 90.28% | — |
Full EPSS history (43 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.8 | 3.0 | CRITICAL |
|
3.9 | 5.9 | [email protected] |
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| redhat | jboss_enterprise_application_platform | <= 4.0 | cpe:2.3:a:redhat:jboss_enterprise_application_platform:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://www.securityfocus.com/bid/98595 | Third Party Advisory VDB Entry |
| https://bugzilla.redhat.com/show_bug.cgi?id=1451441 | Issue Tracking |