PowerDNS DNSdist up to 1.9.12/2.0.3 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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3.7$0-$5k0.00

Summaryinfo

A vulnerability has been found in PowerDNS DNSdist up to 1.9.12/2.0.3 and classified as problematic. Affected by this vulnerability is an unknown functionality. This manipulation causes denial of service. This vulnerability appears as CVE-2026-33597. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in PowerDNS DNSdist up to 1.9.12/2.0.3. It has been declared as problematic. Affected by this vulnerability is an unknown part. 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 weakness was presented by Mehtab Zafar. It is possible to read the advisory at dnsdist.org. This vulnerability is known as CVE-2026-33597 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. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

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 to version 1.9.13 or 2.0.4 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (321078) and EUVD (EUVD-2026-24937). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.7

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

CNA Base Score: 3.7
CNA Vector: 🔒

CVSSv2info

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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: DNSdist 1.9.13/2.0.4

Timelineinfo

03/23/2026 CVE reserved
04/22/2026 +29 days Advisory disclosed
04/22/2026 +0 days VulDB entry created
06/15/2026 +54 days VulDB entry last update

Sourcesinfo

Advisory: dnsdist.org
Researcher: Mehtab Zafar
Status: Confirmed

CVE: CVE-2026-33597 (🔒)
GCVE (CVE): GCVE-0-2026-33597
GCVE (VulDB): GCVE-100-358963
EUVD: 🔒

Entryinfo

Created: 04/22/2026 17:29
Updated: 06/15/2026 19:22
Changes: 04/22/2026 17:29 (63), 04/22/2026 18:35 (1), 06/15/2026 19:22 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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