CVE-2026-33601

Insufficient validation of zonemd record

Medium · published April 22, 2026

CVSS v3.1
4.4
EPSS
1%
Percentile
53.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00718 · 53.3th percentile
Published
2026-04-22T09:37Z
EPSS history
Timeline
  • 22 APR 09:37Z
    Insufficient validation of zonemd record
    cvelistv5