CVE-2026-33600
MEDIUMCVSS 4.9/10EPSS 0.52%
Last modified
CVE-2026-33600 is a medium-severity vulnerability rated 4.9/10 on the CVSS scale. An RPZ sent by a malicious authoritative server can result in a null pointer dereference, caused by a missing consistency check and leading to a denial of service.. EPSS estimates a 0.52% chance of exploitation in the next 30 days.
Description
An RPZ sent by a malicious authoritative server can result in a null pointer dereference, caused by a missing consistency check and leading to a denial of service.
Metrics
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Powerdns | Recursor | >= 5.2.0, < 5.2.9 |
| Powerdns | Recursor | >= 5.3.0, < 5.3.6 |
| Powerdns | Recursor | 5.4.0 |
References
- https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-03.htmlBroken Link, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-33600?
An RPZ sent by a malicious authoritative server can result in a null pointer dereference, caused by a missing consistency check and leading to a denial of service.
How severe is CVE-2026-33600?
CVE-2026-33600 has a CVSS score of 4.9/10 (MEDIUM severity). The EPSS model estimates a 0.52% probability of exploitation in the next 30 days.
How do I fix CVE-2026-33600?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2026-33600?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST