What is CVE-2011-2207?

CVE-2011-2207 is a medium-severity vulnerability in Dirmngr, classified under Improper Certificate Validation. CVSS score: 5.3/10. Published 2019-11-27.

How severe is CVE-2011-2207?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Dirmngr

CVE-2011-2207

dirmngr before 2.1.0 improperly handles certain system calls, which allows remote attackers to cause a denial of service (DOS) via a specially-crafted certificate.

Vulnerability class: Improper Certificate Validation

Published 2019-11-27 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.012 (67.0th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Dirmngr — versions fixed in 2.1.0, 1.1.0
Gnupg
Debian Linux — versions 8.0
Red Hat Enterprise Linux — versions 6.0

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

security-tracker.debian.org/tracker/CVE-2011-2207 (Third Party Advisory)
bugzilla.redhat.com/show_bug.cgi (Exploit, Patch, Third Party Advisory, Issue Tracking)
access.redhat.com/security/cve/cve-2011-2207 (Third Party Advisory)
bugs.debian.org/cgi-bin/bugreport.cgi (Third Party Advisory)
www.openwall.com/lists/oss-security/2011/06/15/6 (mailing-list, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2011-2207?: CVE-2011-2207 is a medium-severity vulnerability in Dirmngr, classified under Improper Certificate Validation. CVSS score: 5.3/10. Published 2019-11-27.
How severe is CVE-2011-2207?: Medium severity. CVSS v3 base score is 5.3 out of 10.