Varnish before 3.0.5 allows remote attackers to cause a denial of service (child-process crash and temporary caching outage) via a GET request with trailing whitespace characters and no URI.
Conclusion & alert: CVE-2013-4484 is rated High Exploit Risk (63.4/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.55%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 2025-12-24 | 1.46% | 1.55% | +0.09% |
| 2 | 2025-06-22 | 1.35% | 1.46% | +0.11% |
| 3 | 2025-03-30 | — | 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 |
|---|---|---|---|
debian
|
medium | CVE-2013-4484 medium priority: Debian including 1 source packages (varnish), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2013-4484 |
gentoo
|
normal | CVE-2013-4484: 1 GLSA(s) (201412-30), 1 atom(s) (www-servers/varnish); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2013-4484 |
ubuntu
|
medium | CVE-2013-4484 medium priority: Ubuntu including 1 source packages (varnish), 13 status rows across 13 suites (lucid, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): not-affected 7, ignored 5, released 1. | https://ubuntu.com/security/CVE-2013-4484 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| varnish-cache | varnish | 2.0.0 | cpe:2.3:a:varnish-cache:varnish:2.0.0:*:*:*:*:*:*:* |
| varnish_cache_project | varnish_cache | <= 3.0.4 | cpe:2.3:a:varnish_cache_project:varnish_cache:*:*:*:*:*:*:*:* |
| varnish_cache_project | varnish_cache | 2.0.1 | cpe:2.3:a:varnish_cache_project:varnish_cache:2.0.1:*:*:*:*:*:*:* |
| varnish_cache_project | varnish_cache | 2.0.2 | cpe:2.3:a:varnish_cache_project:varnish_cache:2.0.2:*:*:*:*:*:*:* |
| varnish_cache_project | varnish_cache | 2.0.3 | cpe:2.3:a:varnish_cache_project:varnish_cache:2.0.3:*:*:*:*:*:*:* |
| varnish_cache_project | varnish_cache | 2.0.4 | cpe:2.3:a:varnish_cache_project:varnish_cache:2.0.4:*:*:*:*:*:*:* |
| varnish_cache_project | varnish_cache | 2.0.5 | cpe:2.3:a:varnish_cache_project:varnish_cache:2.0.5:*:*:*:*:*:*:* |
| varnish_cache_project | varnish_cache | 2.0.6 | cpe:2.3:a:varnish_cache_project:varnish_cache:2.0.6:*:*:*:*:*:*:* |
| varnish_cache_project | varnish_cache | 2.1.0 | cpe:2.3:a:varnish_cache_project:varnish_cache:2.1.0:*:*:*:*:*:*:* |
| varnish_cache_project | varnish_cache | 2.1.1 | cpe:2.3:a:varnish_cache_project:varnish_cache:2.1.1:*:*:*:*:*:*:* |
| varnish_cache_project | varnish_cache | 2.1.2 | cpe:2.3:a:varnish_cache_project:varnish_cache:2.1.2:*:*:*:*:*:*:* |
| varnish_cache_project | varnish_cache | 2.1.3 | cpe:2.3:a:varnish_cache_project:varnish_cache:2.1.3:*:*:*:*:*:*:* |
| varnish_cache_project | varnish_cache | 2.1.4 | cpe:2.3:a:varnish_cache_project:varnish_cache:2.1.4:*:*:*:*:*:*:* |
| varnish_cache_project | varnish_cache | 2.1.5 | cpe:2.3:a:varnish_cache_project:varnish_cache:2.1.5:*:*:*:*:*:*:* |
| varnish_cache_project | varnish_cache | 3.0.0 | cpe:2.3:a:varnish_cache_project:varnish_cache:3.0.0:*:*:*:*:*:*:* |
| varnish_cache_project | varnish_cache | 3.0.0 | cpe:2.3:a:varnish_cache_project:varnish_cache:3.0.0:beta1:*:*:*:*:*:* |
| varnish_cache_project | varnish_cache | 3.0.0 | cpe:2.3:a:varnish_cache_project:varnish_cache:3.0.0:beta2:*:*:*:*:*:* |
| varnish_cache_project | varnish_cache | 3.0.1 | cpe:2.3:a:varnish_cache_project:varnish_cache:3.0.1:*:*:*:*:*:*:* |
| varnish_cache_project | varnish_cache | 3.0.2 | cpe:2.3:a:varnish_cache_project:varnish_cache:3.0.2:*:*:*:*:*:*:* |
| varnish_cache_project | varnish_cache | 3.0.3 | cpe:2.3:a:varnish_cache_project:varnish_cache:3.0.3:*:*:*:*:*:*:* |