Vulnerability Report

CVE-2006-4252

Title: Powerdns Recursor Denial of Service (DoS)

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2006-4252.

CWE Category NVD-CWE-noinfo

Published Date Nov 14, 2006

Modified Date Apr 23, 2026

Exploit Status Not Found

Score 5.0 CVSS v2.0

Exploit Probability (EPSS)

5.91%

Vulnerability Summary

CVE-2006-4252: PowerDNS Recursor 3.1.3 and earlier allows remote attackers to cause a denial of service (resource exhaustion and application crash) via a CNAME record with a zero TTL, which triggers an infinite loop.

Impacted Vendors

powerdns 1

Reference Links

http://doc.powerdns.com/powerdns-advisory-2006-02.html http://lists.suse.com/archive/suse-security-announce/2006-Nov/0007.html http://secunia.com/advisories/22824 http://secunia.com/advisories/22976 http://www.securityfocus.com/bid/21037 http://www.vupen.com/english/advisories/2006/4484 https://exchange.xforce.ibmcloud.com/vulnerabilities/30257 http://doc.powerdns.com/powerdns-advisory-2006-02.html http://lists.suse.com/archive/suse-security-announce/2006-Nov/0007.html http://secunia.com/advisories/22824 http://secunia.com/advisories/22976 http://www.securityfocus.com/bid/21037 http://www.vupen.com/english/advisories/2006/4484 https://exchange.xforce.ibmcloud.com/vulnerabilities/30257

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-2006-4252 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

April 23, 2026 MODIFIED

Vulnerability data updated via NVD.

April 09, 2025 MODIFIED

Vulnerability data or affected products updated.

November 14, 2006 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A

Complexity N/A

Privileges N/A

Interaction NONE

CVSS Vector String


                                    AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected Stack

No specific products linked.