CVE-2026-33612
ZoneToCache can poison the cache
Description
A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to cache poisoning.
INFO
Published Date :
June 25, 2026, 1:16 p.m.
Last Modified :
June 25, 2026, 4 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 8ce71d90-2354-404b-a86e-bec2cc4e6981 | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update the affected software to the latest version.
- Configure authoritative servers securely.
- Implement DNSSEC validation.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-33612.
| URL | Resource |
|---|---|
| https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-08.html |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-33612 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-33612
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-33612 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-33612 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 25, 2026
Action Type Old Value New Value Added CWE CWE-349 Added SSVC {'id': 'CVE-2026-33612', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-25T13:35:24.220350Z'} -
New CVE Received by [email protected]
Jun. 25, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://github.com/PowerDNS/pdns', 'vendor': 'PowerDNS', 'modules': ['Zone to cache'], 'product': 'Recursor', 'versions': [{'status': 'affected', 'version': '5.2.0', 'lessThan': '5.2.11', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.3.0', 'lessThan': '5.3.8', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.4.0', 'lessThan': '5.4.3', 'versionType': 'semver'}], 'packageName': 'pdns-recursor', 'programFiles': ['rec-zonetocache.cc'], 'collectionURL': 'https://repo.powerdns.com/', 'defaultStatus': 'unaffected'}] Added Description A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to cache poisoning. Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:L Added Reference https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-08.html