CVE Catalog

CVE-2026-33601

MediumCVSS 4.4
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.51%

43th percentile - higher than 43% of all known CVEs

Summary

When using the zoneToCache function with a malicious authoritative server, an attacker can send a zone that results in a null pointer dereference due to a missing consistency check, leading to a denial of service.

Risk Assessment

An attacker could crash the DNS service or the zone-processing component, causing name resolution unavailability. This requires zoneToCache to be configured with an untrusted authoritative server.

Recommendation

Update the software to a version containing the fix and configure zoneToCache only with trusted authoritative servers.

Related vulnerabilities

Original NVD description (English source)

If you use the zoneToCache function with a malicious authoritative server, an attacker can send a zone that result in a null pointer dereference, caused by a missing consistency check and leading to a denial of service.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS