What is CVE-2016-4579?

CVE-2016-4579 is a high-severity vulnerability in Gnupg Libksba, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2016-06-13.

How severe is CVE-2016-4579?

High severity. CVSS v3 base score is 7.5 out of 10.

Improper input validation in Gnupg Libksba

CVE-2016-4579

Libksba before 1.3.4 allows remote attackers to cause a denial of service (out-of-bounds read and crash) via unspecified vectors, related to the "returned length of the object from _ksba_ber_parse_tl."

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2016-06-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.032 (87.7th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000

Affected products

Gnupg Libksba
Canonical Ubuntu Linux — versions 12.04, 14.04, 15.10
openSUSE Leap — versions 42.1

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

www.ubuntu.com/usn/USN-2982-1 (vendor-advisory)
www.openwall.com/lists/oss-security/2016/05/11/10 (mailing-list)
lists.opensuse.org/opensuse-updates/2016-06/msg00028.html (vendor-advisory)
security.gentoo.org/glsa/201706-22 (vendor-advisory)
www.openwall.com/lists/oss-security/2016/05/10/8 (mailing-list)
git.gnupg.org/cgi-bin/gitweb.cgi

Frequently asked questions

What is CVE-2016-4579?: CVE-2016-4579 is a high-severity vulnerability in Gnupg Libksba, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2016-06-13.
How severe is CVE-2016-4579?: High severity. CVSS v3 base score is 7.5 out of 10.