What is CVE-2013-2125?

CVE-2013-2125 is a vulnerability in OpenBSD Opensmtpd, classified under Cryptographic Issues. Published 2014-05-27.

Is CVE-2013-2125 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in OpenBSD Opensmtpd

CVE-2013-2125

OpenSMTPD before 5.3.2 does not properly handle SSL sessions, which allows remote attackers to cause a denial of service (connection blocking) by keeping a connection open.

Vulnerability class: POODLE (CVE-2014-3566)

Published 2014-05-27 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 5.0 (Medium). Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.025 (83.9th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 83.9% 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

OpenBSD Opensmtpd

Weakness classification (CWE)

CWE-310 — Cryptographic Issues

Public proof-of-concept exploits

Farrhouq/Inpt-report

References

seclists.org/oss-sec/2013/q2/362 (mailing-list, Exploit)
git.zx2c4.com/OpenSMTPD/commit/ (Exploit, Patch)
secunia.com/advisories/53353 (third-party-advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/84388 (vdb-entry)
seclists.org/oss-sec/2013/q2/366 (mailing-list)
osvdb.org/93495 (vdb-entry)

Frequently asked questions

What is CVE-2013-2125?: CVE-2013-2125 is a vulnerability in OpenBSD Opensmtpd, classified under Cryptographic Issues. Published 2014-05-27.
Is CVE-2013-2125 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.