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.
CVSS 6.5EPSS 0.128%Risk 0.66
View source- Published
- 2026-07-22 14:17:20
- Affected versions
- <=1.25.1
- Type
- Critical software
- Last modified
- 2026-07-24 13:59:37
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L