Vulnerability Report

CVE-2016-5426

Title: Powerdns Authoritative Denial of Service (DoS)

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2016-5426.

CWE Category CWE-399
Published Date Sep 21, 2016
Modified Date May 06, 2026
Exploit Status Not Found
Score 7.5 CVSS v3.0
Exploit Probability (EPSS)
30.63%

Vulnerability Summary

CVE-2016-5426: PowerDNS (aka pdns) Authoritative Server before 3.4.10 allows remote attackers to cause a denial of service (backend CPU consumption) via a long qname.

Impacted Vendors

P
powerdns 1

Reference Links

http://www.debian.org/security/2016/dsa-3664 http://www.openwall.com/lists/oss-security/2016/09/09/3 http://www.securityfocus.com/bid/92917 http://www.securitytracker.com/id/1036761 https://doc.powerdns.com/md/security/powerdns-advisory-2016-01/ https://github.com/PowerDNS/pdns/commit/881b5b03a590198d03008e4200dd00cc537712f3 http://www.debian.org/security/2016/dsa-3664 http://www.openwall.com/lists/oss-security/2016/09/09/3 http://www.securityfocus.com/bid/92917 http://www.securitytracker.com/id/1036761 https://doc.powerdns.com/md/security/powerdns-advisory-2016-01/ https://github.com/PowerDNS/pdns/commit/881b5b03a590198d03008e4200dd00cc537712f3
CVSS v3.0
Source Entity [email protected]
Severity HIGH
7.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
5.0
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:N/C:N/I:N/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2016-5426 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Stack

No specific products linked.