ibacm before 1.0.6 does not properly manage reference counts for multicast connections, which allows remote attackers to cause a denial of service (ibacm service crash) via a crafted join response.
Conclusion & alert: CVE-2012-4517 is rated Moderate Risk (50.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.77%). Core evidence: EPSS rose +1.31% over the last day, indicating growing attacker interest. 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 | 2026-06-15 | 1.46% | 2.77% | +1.31% |
| 2 | 2026-03-26 | 1.35% | 1.46% | +0.11% |
| 3 | 2026-03-02 | — | 1.35% | — |
Full EPSS history (10 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 | priority | summary | link |
|---|---|---|---|
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2012-4517 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| openfabrics | ibacm | <= 1.0.5 | cpe:2.3:a:openfabrics:ibacm:*:*:*:*:*:*:*:* |