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CVE-2026-33261 Details
Description
A zone transition from NSEC to NSEC3 might trigger an internal inconsistency and cause a denial of service.
A denial-of-service vulnerability has been identified in PowerDNS Recursor. The issue arises when a zone transition from NSEC to NSEC3 occurs, potentially triggering an internal inconsistency that leads to a service disruption.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 22, 2026Exploitation: NoneAutomatable: NoTechnical Impact: Partial
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-03.html | [email protected] | Broken LinkVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-353 | Missing Support for Integrity Check | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| powerdns recursor | >= 5.2.0, < 5.2.9 >= 5.3.0, < 5.3.6 5.4.0 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 27, 2026 | Initial Analysis | [email protected] |
| Apr 22, 2026 | CVE Modified | CISA-ADP |
| Apr 22, 2026 | New CVE Received | [email protected] |