6.5
Medium
CVE-2026-50248 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…
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| unbound 1.7 | 1.7.0 → < 1.25.2 | 1.25.2 |
Other CVEs of unbound
The 58 CVEs of unbound →
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7.5
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6.5
Medium
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3.7
Low