Is CVE-2014-0239 being actively exploited?

CVE-2014-0239 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2014-0239?

CVE-2014-0239 has a CVSS 2.0 base score of 5.0 (MEDIUM).

CVE-2014-0239

MEDIUM · CVSS 5.0EPSS 66.8%EU EUVD

The internal DNS server in Samba 4.x before 4.0.18 does not check the QR field in the header section of an incoming DNS message before sending a response, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged response packet that triggers a communication loop, a related issue to CVE-1999-0103.

Key facts

CVSS score: 5.0 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness (CWE): CWE-20
EPSS score: 66.8% (99th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2014-0277)
Published: May 28, 2014
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2014-0277 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

samba / samba

References

http://secunia.com/advisories/59579(Third Party Advisory)
http://security.gentoo.org/glsa/glsa-201502-15.xml(Third Party Advisory)
http://www.samba.org/samba/security/CVE-2014-0239(Vendor Advisory)
http://www.securityfocus.com/bid/67691(Third Party Advisory, VDB Entry)
http://www.securitytracker.com/id/1030309(Third Party Advisory, VDB Entry)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

Query CVEs from your AI assistant

The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.

Add the CVE brain