Buffer overflow in the "read-string!" procedure in the "extras" unit in CHICKEN stable before 4.8.0.5 and development snapshots before 4.8.3 allows remote attackers to cause a denial of service (memory corruption and application crash) and possibly execute arbitrary code via a "#f" value in the NUM argument.
Conclusion & alert: CVE-2013-4385 is rated Moderate Risk (61.2/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.39%). 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 | 2.71% | 3.39% | +0.68% |
| 2 | 2025-03-30 | 3.30% | 2.71% | -0.59% |
| 3 | 2025-03-29 | — | 3.30% | — |
Full EPSS history (7 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
low | CVE-2013-4385 low priority: Debian including 1 source packages (chicken), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2013-4385 |
gentoo
|
normal | CVE-2013-4385: 1 GLSA(s) (201612-54), 1 atom(s) (dev-scheme/chicken); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2013-4385 |
ubuntu
|
high | CVE-2013-4385 high priority: Ubuntu including 1 source packages (chicken), 13 status rows across 13 suites (lucid, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): ignored 8, not-affected 3, released 2. | https://ubuntu.com/security/CVE-2013-4385 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| call-cc | chicken | <= 4.8.0.4 | cpe:2.3:a:call-cc:chicken:*:*:*:*:*:*:*:* |
| call-cc | chicken | 3.0.0 | cpe:2.3:a:call-cc:chicken:3.0.0:*:*:*:*:*:*:* |
| call-cc | chicken | 3.1.0 | cpe:2.3:a:call-cc:chicken:3.1.0:*:*:*:*:*:*:* |
| call-cc | chicken | 3.2.0 | cpe:2.3:a:call-cc:chicken:3.2.0:*:*:*:*:*:*:* |
| call-cc | chicken | 3.3.0 | cpe:2.3:a:call-cc:chicken:3.3.0:*:*:*:*:*:*:* |
| call-cc | chicken | 3.4.0 | cpe:2.3:a:call-cc:chicken:3.4.0:*:*:*:*:*:*:* |
| call-cc | chicken | 4.0.0 | cpe:2.3:a:call-cc:chicken:4.0.0:*:*:*:*:*:*:* |
| call-cc | chicken | 4.1.0 | cpe:2.3:a:call-cc:chicken:4.1.0:*:*:*:*:*:*:* |
| call-cc | chicken | 4.2.0 | cpe:2.3:a:call-cc:chicken:4.2.0:*:*:*:*:*:*:* |
| call-cc | chicken | 4.3.0 | cpe:2.3:a:call-cc:chicken:4.3.0:*:*:*:*:*:*:* |
| call-cc | chicken | 4.4.0 | cpe:2.3:a:call-cc:chicken:4.4.0:*:*:*:*:*:*:* |
| call-cc | chicken | 4.5.0 | cpe:2.3:a:call-cc:chicken:4.5.0:*:*:*:*:*:*:* |
| call-cc | chicken | 4.6.0 | cpe:2.3:a:call-cc:chicken:4.6.0:*:*:*:*:*:*:* |
| call-cc | chicken | 4.7.0 | cpe:2.3:a:call-cc:chicken:4.7.0:*:*:*:*:*:*:* |
| call-cc | chicken | 4.7.0.6 | cpe:2.3:a:call-cc:chicken:4.7.0.6:*:*:*:*:*:*:* |
| call-cc | chicken | 4.8.0 | cpe:2.3:a:call-cc:chicken:4.8.0:*:*:*:*:*:*:* |
| call-cc | chicken | 4.8.0.1 | cpe:2.3:a:call-cc:chicken:4.8.0.1:*:*:*:*:*:*:* |
| call-cc | chicken | 4.8.0.2 | cpe:2.3:a:call-cc:chicken:4.8.0.2:*:*:*:*:*:*:* |
| call-cc | chicken | 4.8.0.3 | cpe:2.3:a:call-cc:chicken:4.8.0.3:*:*:*:*:*:*:* |
| call-cc | chicken | <= 4.8.1 | cpe:2.3:a:call-cc:chicken:*:*:*:*:*:*:*:* |
| call-cc | chicken | 4.3.3 | cpe:2.3:a:call-cc:chicken:4.3.3:*:*:*:*:*:*:* |
| call-cc | chicken | 4.3.4 | cpe:2.3:a:call-cc:chicken:4.3.4:*:*:*:*:*:*:* |
| call-cc | chicken | 4.3.5 | cpe:2.3:a:call-cc:chicken:4.3.5:*:*:*:*:*:*:* |
| call-cc | chicken | 4.3.6 | cpe:2.3:a:call-cc:chicken:4.3.6:*:*:*:*:*:*:* |
| call-cc | chicken | 4.3.7 | cpe:2.3:a:call-cc:chicken:4.3.7:*:*:*:*:*:*:* |
| call-cc | chicken | 4.4.3 | cpe:2.3:a:call-cc:chicken:4.4.3:*:*:*:*:*:*:* |
| call-cc | chicken | 4.4.4 | cpe:2.3:a:call-cc:chicken:4.4.4:*:*:*:*:*:*:* |
| call-cc | chicken | 4.4.5 | cpe:2.3:a:call-cc:chicken:4.4.5:*:*:*:*:*:*:* |
| call-cc | chicken | 4.4.6 | cpe:2.3:a:call-cc:chicken:4.4.6:*:*:*:*:*:*:* |
| call-cc | chicken | 4.5.2 | cpe:2.3:a:call-cc:chicken:4.5.2:*:*:*:*:*:*:* |
| call-cc | chicken | 4.5.5 | cpe:2.3:a:call-cc:chicken:4.5.5:*:*:*:*:*:*:* |
| call-cc | chicken | 4.5.6 | cpe:2.3:a:call-cc:chicken:4.5.6:*:*:*:*:*:*:* |
| call-cc | chicken | 4.5.7 | cpe:2.3:a:call-cc:chicken:4.5.7:*:*:*:*:*:*:* |
| call-cc | chicken | 4.6.1 | cpe:2.3:a:call-cc:chicken:4.6.1:*:*:*:*:*:*:* |
| call-cc | chicken | 4.6.2 | cpe:2.3:a:call-cc:chicken:4.6.2:*:*:*:*:*:*:* |
| call-cc | chicken | 4.6.3 | cpe:2.3:a:call-cc:chicken:4.6.3:*:*:*:*:*:*:* |
| call-cc | chicken | 4.6.5 | cpe:2.3:a:call-cc:chicken:4.6.5:*:*:*:*:*:*:* |
| call-cc | chicken | 4.6.6 | cpe:2.3:a:call-cc:chicken:4.6.6:*:*:*:*:*:*:* |
| call-cc | chicken | 4.6.7 | cpe:2.3:a:call-cc:chicken:4.6.7:*:*:*:*:*:*:* |
| call-cc | chicken | 4.7.2 | cpe:2.3:a:call-cc:chicken:4.7.2:*:*:*:*:*:*:* |
| call-cc | chicken | 4.7.3 | cpe:2.3:a:call-cc:chicken:4.7.3:*:*:*:*:*:*:* |
| call-cc | chicken | 4.7.4 | cpe:2.3:a:call-cc:chicken:4.7.4:*:*:*:*:*:*:* |
| call-cc | chicken | 4.8.0 | cpe:2.3:a:call-cc:chicken:4.8.0:rc1:*:*:*:*:*:* |
| call-cc | chicken | 4.8.0 | cpe:2.3:a:call-cc:chicken:4.8.0:rc2:*:*:*:*:*:* |
| call-cc | chicken | 4.8.0 | cpe:2.3:a:call-cc:chicken:4.8.0:rc3:*:*:*:*:*:* |
| call-cc | chicken | 4.8.0 | cpe:2.3:a:call-cc:chicken:4.8.0:rc4:*:*:*:*:*:* |