PowerDNS Authoritative up to 4.9.13/5.0.3 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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5.5$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in PowerDNS Authoritative up to 4.9.13/5.0.3. Impacted is an unknown function. This manipulation causes denial of service. This vulnerability is tracked as CVE-2026-33608. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in PowerDNS Authoritative up to 4.9.13/5.0.3. Affected by this vulnerability is an unknown code. 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. The summary by CVE is:

An attacker can send a notify request that causes a new secondary domain to be added to the bind backend, but causes said backend to update its configuration to an invalid one, leading to the backend no longer able to run on the next restart, requiring manual operation to fix it.

The weakness was disclosed by Vitaly Simonovich. The advisory is shared at docs.powerdns.com. This vulnerability is known as CVE-2026-33608 since 03/23/2026. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading to version 4.9.14 or 5.0.4 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-1236). If you want to get the best quality for vulnerability data then you always have to consider 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: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.4
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Authoritative 4.9.14/5.0.4

Timelineinfo

03/23/2026 CVE reserved
04/22/2026 +29 days Advisory disclosed
04/22/2026 +0 days VulDB entry created
04/23/2026 +1 days VulDB entry last update

Sourcesinfo

Advisory: docs.powerdns.com
Researcher: Vitaly Simonovich
Status: Confirmed

CVE: CVE-2026-33608 (🔒)
GCVE (CVE): GCVE-0-2026-33608
GCVE (VulDB): GCVE-100-358957
CERT Bund: WID-SEC-2026-1236 - PowerDNS: Mehrere Schwachstellen

Entryinfo

Created: 04/22/2026 17:27
Updated: 04/23/2026 12:05
Changes: 04/22/2026 17:27 (64), 04/23/2026 12:05 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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