Integer overflow in the qpid::framing::Buffer::checkAvailable function in Apache Qpid 0.20 and earlier allows remote attackers to cause a denial of service (crash) via a crafted message, which triggers an out-of-bounds read.
Conclusion & alert: CVE-2012-4459 is rated Moderate Risk (58.1/100): CVSS Medium severity, with high exploitation likelihood (EPSS 9.21%, 95th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +7.69% 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 | 1.52% | 9.21% | +7.69% |
| 2 | 2026-03-13 | 1.19% | 1.52% | +0.33% |
| 3 | 2025-03-30 | — | 1.19% | — |
Full EPSS history (14 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
|
medium | — | https://access.redhat.com/security/cve/CVE-2012-4459 |
ubuntu
|
medium | CVE-2012-4459 medium priority: Ubuntu including 1 source packages (qpid-cpp), 30 status rows across 30 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hardy, hirsute, impish, jammy, lucid, mantic, noble, oneiric, oracular, plucky, precise, quantal, questing, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): DNE 18, ignored 10, needed 2. | https://ubuntu.com/security/CVE-2012-4459 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| apache | qpid | <= 0.20 | cpe:2.3:a:apache:qpid:*:*:*:*:*:*:*:* |
| apache | qpid | 0.5 | cpe:2.3:a:apache:qpid:0.5:*:*:*:*:*:*:* |
| apache | qpid | 0.6 | cpe:2.3:a:apache:qpid:0.6:*:*:*:*:*:*:* |
| apache | qpid | 0.7 | cpe:2.3:a:apache:qpid:0.7:*:*:*:*:*:*:* |
| apache | qpid | 0.8 | cpe:2.3:a:apache:qpid:0.8:*:*:*:*:*:*:* |
| apache | qpid | 0.9 | cpe:2.3:a:apache:qpid:0.9:*:*:*:*:*:*:* |
| apache | qpid | 0.10 | cpe:2.3:a:apache:qpid:0.10:*:*:*:*:*:*:* |
| apache | qpid | 0.11 | cpe:2.3:a:apache:qpid:0.11:*:*:*:*:*:*:* |
| apache | qpid | 0.12 | cpe:2.3:a:apache:qpid:0.12:*:*:*:*:*:*:* |
| apache | qpid | 0.13 | cpe:2.3:a:apache:qpid:0.13:*:*:*:*:*:*:* |
| apache | qpid | 0.14 | cpe:2.3:a:apache:qpid:0.14:*:*:*:*:*:*:* |
| apache | qpid | 0.15 | cpe:2.3:a:apache:qpid:0.15:*:*:*:*:*:*:* |
| apache | qpid | 0.16 | cpe:2.3:a:apache:qpid:0.16:*:*:*:*:*:*:* |
| apache | qpid | 0.17 | cpe:2.3:a:apache:qpid:0.17:*:*:*:*:*:*:* |
| apache | qpid | 0.18 | cpe:2.3:a:apache:qpid:0.18:*:*:*:*:*:*:* |
| apache | qpid | 0.19 | cpe:2.3:a:apache:qpid:0.19:*:*:*:*:*:*:* |