CVE-2026-33257

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

22/04/2026

Last modified:

27/04/2026

Description

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS v3.1 Severity and Metrics:

Base Score: 5.30 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): Low

Base Score 3.x

5.30

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:powerdns:authoritative::::::::	4.9.0 (including)	4.9.14 (excluding)
cpe:2.3:a:powerdns:authoritative::::::::	5.0.0 (including)	5.0.4 (excluding)
cpe:2.3:a:powerdns:dnsdist::::::::	1.9.0 (including)	1.9.13 (excluding)
cpe:2.3:a:powerdns:dnsdist::::::::	2.0.0 (including)	2.0.4 (excluding)
cpe:2.3:a:powerdns:recursor::::::::	5.2.0 (including)	5.2.9 (excluding)
cpe:2.3:a:powerdns:recursor::::::::	5.3.0 (including)	5.3.6 (excluding)
cpe:2.3:a:powerdns:recursor:5.4.0:::::::*

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-33257

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools