PowerDNS Recursor up to 5.1.9/5.2.7/5.3.4 Zones denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in PowerDNS Recursor up to 5.1.9/5.2.7/5.3.4. This impacts an unknown function of the component Zones Handler. Such manipulation leads to denial of service. This vulnerability is uniquely identified as CVE-2026-24027. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in PowerDNS Recursor up to 5.1.9/5.2.7/5.3.4 and classified as problematic. Affected by this issue is an unknown function of the component Zones Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability.

The weakness was disclosed by Shuhan Zhang. The advisory is available at docs.powerdns.com. This vulnerability is handled as CVE-2026-24027 since 01/20/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 298390 (Linux Distros Unpatched Vulnerability : CVE-2026-24027), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.1.10, 5.2.8 or 5.3.5 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (298390) and CERT Bund (WID-SEC-2026-0355). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Open Source PowerDNS

Productinfo

Type

Vendor

Name

Version

License

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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔒

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Nessus ID: 298390
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-24027

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Recursor 5.1.10/5.2.8/5.3.5

Timelineinfo

01/20/2026 CVE reserved
02/09/2026 +20 days Advisory disclosed
02/09/2026 +0 days VulDB entry created
02/11/2026 +2 days VulDB entry last update

Sourcesinfo

Advisory: docs.powerdns.com
Researcher: Shuhan Zhang
Status: Confirmed

CVE: CVE-2026-24027 (🔒)
GCVE (CVE): GCVE-0-2026-24027
GCVE (VulDB): GCVE-100-345002
CERT Bund: WID-SEC-2026-0355 - PowerDNS Recursor: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 02/09/2026 17:55
Updated: 02/11/2026 04:44
Changes: 02/09/2026 17:55 (62), 02/10/2026 01:32 (2), 02/11/2026 04:44 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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