What is CVE-2009-3887?

CVE-2009-3887 is a critical-severity vulnerability in Ytnef, classified under Path Traversal. CVSS score: 9.8/10. Published 2019-10-29.

How severe is CVE-2009-3887?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Path Traversal in Ytnef

CVE-2009-3887

ytnef has directory traversal

Vulnerability class: Path Traversal (Directory Traversal)

Published 2019-10-29 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.025 (84.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: 0.000

Affected products

Ytnef — versions through 2009-09-07 (Fixed In Version: 2.8)
Ytnef Project

Weakness classification (CWE)

CWE-22 — Path Traversal

References

security-tracker.debian.org/tracker/CVE-2009-3887 (Third Party Advisory)
bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
access.redhat.com/security/cve/cve-2009-3887 (Third Party Advisory)
ocert.org/advisories/ocert-2009-013.html (Third Party Advisory)
www.akitasecurity.nl/advisory.php (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2009-3887?: CVE-2009-3887 is a critical-severity vulnerability in Ytnef, classified under Path Traversal. CVSS score: 9.8/10. Published 2019-10-29.
How severe is CVE-2009-3887?: Critical severity. CVSS v3 base score is 9.8 out of 10.