K000162865: NLnet Labs Unbound vulnerability CVE-2026-44608

Security Advisory Description NLnet Labs Unbound 1.14.0 up to and including version 1.25.0 has a locking inconsistency vulnerability that when certain conditions are met multi-threaded, RPZ XFR reload, RPZ zone with 'rpz-nsip'/'rpz-nsdname' triggers it could result in heap use-after-free and...

F5 Networks BIG-IP : NLnet Labs Unbound vulnerability (K000162865)

The version of F5 Networks BIG-IP installed on the remote host is prior to 17.1.3.5 / 17.1.5.9 / 21.1.0.2. It is, therefore, affected by a vulnerability as referenced in the K000162865 advisory. NLnet Labs Unbound 1.14.0 up to and including version 1.25.0 has a locking inconsistency vulnerability...

EulerOS 2.0 SP15 : unbound (EulerOS-SA-2026-2954)

According to the versions of the unbound packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : NLnet Labs Unbound 1.14.0 up to and including version 1.25.0 has a locking inconsistency vulnerability that when certain conditions are met...

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 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'...

ALPINE-CVE-2026-12490

When a provide-xfr is given with a tls-auth-name, a secondary requesting a transfer should provide a client certificate with that name. However, no client certificate is needed when the request comes in over TLS over the regular tls-port and not the tls-auth-port or over over TCP over the regular...

unbound: Unbound: Denial of Service due to locking inconsistency during RPZ XFR reload

A flaw was found in Unbound. When operating in a multi-threaded configuration with specific Response Policy Zones RPZ using 'rpz-nsip' or 'rpz-nsdname' triggers, a locking inconsistency during an RPZ zone transfer XFR reload can occur. This timing issue may allow an adversary to trigger a heap...

EUVD-2026-31087

NLnet Labs Unbound 1.14.0 up to and including version 1.25.0 has a locking inconsistency vulnerability that when certain conditions are met multi-threaded, RPZ XFR reload, RPZ zone with 'rpz-nsip'/'rpz-nsdname' triggers it could result in heap use-after-free and eventual crash. An adversary can...

CVE-2026-44608

NLnet Labs Unbound 1.14.0 up to and including version 1.25.0 has a locking inconsistency vulnerability that when certain conditions are met multi-threaded, RPZ XFR reload, RPZ zone with 'rpz-nsip'/'rpz-nsdname' triggers it could result in heap use-after-free and eventual crash. An adversary can...

CVE-2026-44608

NLnet Labs Unbound 1.14.0 up to and including version 1.25.0 has a locking inconsistency vulnerability that when certain conditions are met multi-threaded, RPZ XFR reload, RPZ zone with 'rpz-nsip'/'rpz-nsdname' triggers it could result in heap use-after-free and eventual crash. An adversary can...