The cloud controller (aka CLC) component in Eucalyptus 3.3.x and 3.4.x before 3.4.2, when the dns.recursive.enabled setting is used, allows remote attackers to cause a denial of service (traffic amplification) via spoofed DNS queries.
Conclusion & alert: CVE-2013-4769 is rated Low Risk (39.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.16%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
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 | 0.44% | 1.16% | +0.71% |
| 2 | 2025-03-30 | 0.49% | 0.44% | -0.05% |
| 3 | 2025-03-29 | — | 0.49% | — |
Full EPSS history (6 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
ubuntu
|
medium | CVE-2013-4769 medium priority: Ubuntu including 1 source packages (eucalyptus), 10 status rows across 10 suites (lucid, precise, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): DNE 7, ignored 2, needs-triage 1. | https://ubuntu.com/security/CVE-2013-4769 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| eucalyptus | eucalyptus | 3.3.0 | cpe:2.3:a:eucalyptus:eucalyptus:3.3.0:*:*:*:*:*:*:* |
| eucalyptus | eucalyptus | 3.3.1 | cpe:2.3:a:eucalyptus:eucalyptus:3.3.1:*:*:*:*:*:*:* |
| eucalyptus | eucalyptus | 3.3.2 | cpe:2.3:a:eucalyptus:eucalyptus:3.3.2:*:*:*:*:*:*:* |
| eucalyptus | eucalyptus | 3.4.0 | cpe:2.3:a:eucalyptus:eucalyptus:3.4.0:*:*:*:*:*:*:* |
| eucalyptus | eucalyptus | 3.4.1 | cpe:2.3:a:eucalyptus:eucalyptus:3.4.1:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://www.eucalyptus.com/resources/security/advisories/esa-16 | Vendor Advisory |