VDB-358840 · CVE-2026-33260 · Nessus 321078

PowerDNS Authoritative/DNSdist/Recursor denial of service

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in PowerDNS Authoritative, DNSdist and Recursor. It has been declared as problematic. This impacts an unknown function. Executing a manipulation can lead to denial of service. This vulnerability is registered as CVE-2026-33260. It is possible to launch the attack remotely. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in PowerDNS Authoritative, DNSdist and Recursor (version now known). This vulnerability affects some unknown processing. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. CVE summarizes:

An attacker can send a web request that causes unlimited memory allocation in the internal web server, leading to a denial of service. The internal web server is disabled by default.

The weakness was published by Cavid. The advisory is shared for download at docs.powerdns.com. This vulnerability was named CVE-2026-33260 since 03/18/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

The vulnerability scanner Nessus provides a plugin with the ID 321078 (Fedora 44 : dnsdist (2026-51cdd1292b)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (321078) and CERT Bund (WID-SEC-2026-1225). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

Debian Linux
SUSE openSUSE
Open Source PowerDNS

Productinfo

Type

Domain Name Software

Vendor

PowerDNS

Name

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.3
CNA Vector: 🔒

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 321078
Nessus Name: Fedora 44 : dnsdist (2026-51cdd1292b)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/18/2026 CVE reserved
04/22/2026 +34 days Advisory disclosed
04/22/2026 +0 days VulDB entry created
06/15/2026 +54 days VulDB entry last update

Sourcesinfo

Advisory: docs.powerdns.com
Researcher: Cavid
Status: Confirmed

CVE: CVE-2026-33260 (🔒)
GCVE (CVE): GCVE-0-2026-33260
GCVE (VulDB): GCVE-100-358840
CERT Bund: WID-SEC-2026-1225 - PowerDNS: Mehrere Schwachstellen

Entryinfo

Created: 04/22/2026 13:29
Updated: 06/15/2026 13:40
Changes: 04/22/2026 13:29 (62), 05/03/2026 20:14 (7), 06/15/2026 13:40 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.