PowerDNS Recursor up to 5.2.8/5.3.5/5.4.0 null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in PowerDNS Recursor up to 5.2.8/5.3.5/5.4.0. This affects an unknown part. Such manipulation leads to null pointer dereference. This vulnerability is traded as CVE-2026-33262. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in PowerDNS Recursor up to 5.2.8/5.3.5/5.4.0 and classified as problematic. Affected by this issue is an unknown part. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. CVE summarizes:

An attacker can send replies that result in a null pointer dereference, caused by a missing consistency check and leading to a denial of service. Cookies are disabled by default.

The weakness was shared by ylwango613. The advisory is shared for download at docs.powerdns.com. This vulnerability is handled as CVE-2026-33262 since 03/18/2026. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

Upgrading to version 5.2.9, 5.3.6 or 5.4.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-1225). Once again VulDB remains the best source for vulnerability data.

Affected

  • Debian Linux
  • SUSE openSUSE
  • 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: 4.8
VulDB Meta Temp Score: 4.7

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

CNA Base Score: 5.9
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / 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: Recursor 5.2.9/5.3.6/5.4.1

Timelineinfo

03/18/2026 CVE reserved
04/22/2026 +34 days Advisory disclosed
04/22/2026 +0 days VulDB entry created
05/03/2026 +11 days VulDB entry last update

Sourcesinfo

Advisory: docs.powerdns.com
Researcher: ylwango613
Status: Confirmed

CVE: CVE-2026-33262 (🔒)
GCVE (CVE): GCVE-0-2026-33262
GCVE (VulDB): GCVE-100-358844
CERT Bund: WID-SEC-2026-1225 - PowerDNS: Mehrere Schwachstellen

Entryinfo

Created: 04/22/2026 13:30
Updated: 05/03/2026 20:14
Changes: 04/22/2026 13:30 (64), 05/03/2026 20:14 (7)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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