Is CVE-2014-3504 in the CISA KEV catalog?

No. CVE-2014-3504 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2014-3504?

CVE-2014-3504 has a CVSS v2 base score of 4.0 (MEDIUM).

What is the EPSS score for CVE-2014-3504?

CVE-2014-3504 has an EPSS score of 3.15% (86th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2014-3504?

Upgrade serf on debian 11 to 1.3.7-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2014-3504

MEDIUMEPSS 86th pctl

4.0

CVSS v2

NVD

Description

The (1) serf_ssl_cert_issuer, (2) serf_ssl_cert_subject, and (3) serf_ssl_cert_certificate functions in Serf 0.2.0 through 1.3.x before 1.3.7 does not properly handle a NUL byte in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority.

How to fix

Remediation Available

serfDebian

Fixed in:1.3.7-1CVE-2014-3504

libserf-1-1Ubuntu

Fixed in:1.3.3-1ubuntu0.1USN-2315-1

serfUbuntu

Fixed in:1.3.3-1ubuntu0.1USN-2315-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

3.15%probability of exploitation in 30 days

86thpercentile

Elevated risk: more likely to be exploited than 86% of all known CVEs.

References

Vendor Advisory2

Other references7

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.