Description

In NLnet Labs Unbound 1.7.0 up to and including 1.25.1, when an auth/rpz zone has a configured primary hostname that resolves to BOGUS A/AAAA, it is still considered as a possible XFR endpoint. A malicious actor that can spoof the hostname's A/AAAA record (no valid RRSIG required) becomes the zone's XFR primary and can replaces the entire zone/the resolver's entire response policy.

Severity (CVSS)

Base score6.5
SeverityMedium
VersionCVSS 3.1
VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L
Provided byCNA

Weaknesses

  • CWE-345 — CWE-345: Insufficient Verification of Data Authenticity

Affected products

VendorProductVersions
NLnet LabsUnbound1.7.0 to <1.25.2

References

Authoritative sources

This page is a snapshot. For the latest enrichment and updates, view the record on CVE.org or the NVD.

Generated from the official CVE List on 23 Jul 2026 07:04 UTC.