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Vulnerability record · CVE-2016-7072 · published 10 September 2018

CVE-2016-7072: Powerdns authoritative improper input validation vulnerability

Powerdns · Authoritative

An issue has been found in PowerDNS Authoritative Server before 3.4.11 and 4.0.2 allowing a remote, unauthenticated attacker to cause a denial of service by opening a large number of TCP connections to the web server. If the web server runs out of file descriptors, it triggers an exception and terminates the whole PowerDNS process. While it's more complicated for an unauthorized attacker to make the web server run out of file descriptors since its connection will be closed just after being accepted, it might still be possible.

7.5 CVSS 3.0 High EPSS 6.3% · top 6.6% CWE-20 · Improper input validationCWE-400 · Uncontrolled resource consumption
7.5CVSS 3.0 base score, v2 5.0
6.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

An issue has been found in PowerDNS Authoritative Server before 3.4.11 and 4.0.2 allowing a remote, unauthenticated attacker to cause a denial of service by opening a large number of TCP connections to the web server. If the web server runs out of file descriptors, it triggers an exception and terminates the whole PowerDNS process. While it's more complicated for an unauthorized attacker to make the web server run out of file descriptors since its connection will be closed just after being accepted, it might still be possible.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7072 Issue TrackingThird Party Advisory
https://doc.powerdns.com/md/security/powerdns-advisory-2016-03/ Vendor Advisory
https://www.debian.org/security/2017/dsa-3764 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7072 Issue TrackingThird Party Advisory
https://doc.powerdns.com/md/security/powerdns-advisory-2016-03/ Vendor Advisory
https://www.debian.org/security/2017/dsa-3764 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2016-7072), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.