← Back

CVE-2026-33259

nvd nist
Published: Apr 22, 2026Modified: Jun 17, 2026

JSON object

Loading...
5.0
Vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H
Exploitability: 0.7 / Impact: 4.2
Source: security@open-xchange.com (Secondary)

Description

Having many concurrent transfers of the same RPZ can lead to inconsistent RPZ data, use after free and/or a crash of the recursor. Normally concurrent transfers of the same RPZ zone can only occur with a malfunctioning RPZ provider.

Affected (3)

Products: Powerdns: Recursor
Powerdns
1 product
Recursor
Configuration A
3 vulnerable
Vulnerable SoftwareAffected Versions
Powerdns
Recursor
From 5.2.0 to 5.2.9
Recursor
From 5.3.0 to 5.3.6
Recursor
Version 5.4.0

Related CWEs

CWE-416
Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (1)

Source: security@open-xchange.com
Broken LinkVendor Advisory

Timeline

No history available yet.