Directory traversal vulnerability in dpkg-source in dpkg-dev 1.3.0 allows remote attackers to modify files outside of the intended directories via a crafted source package that lacks a --- header line.
Conclusion & alert: CVE-2014-3864 is rated Moderate Risk (49.7/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.61%). 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 | 2026-05-16 | 0.98% | 0.61% | -0.37% |
| 2 | 2025-04-14 | 1.33% | 0.98% | -0.35% |
| 3 | 2025-03-30 | — | 1.33% | — |
Full EPSS history (9 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.4 | 2.0 | MEDIUM |
|
10.0 | 4.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2014-3864 not yet assigned priority: Debian including 1 source packages (dpkg), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2014-3864 |
ubuntu
|
medium | CVE-2014-3864 medium priority: Ubuntu including 1 source packages (dpkg), 5 status rows across 5 suites (lucid, precise, saucy, trusty, upstream): released 5. | https://ubuntu.com/security/CVE-2014-3864 |