714 matches found
EUVD-2026-47685
In NLnet Labs Unbound 1.20.0 up to and including 1.25.1, when Unbound is configured with 'serve-expired: yes' and 'serve-expired-client-timeout discard-timeout 0' contrary to the suggested values, the discard-timeout branch during the serve expired logic drops an aged client reply without...
CVE-2026-56444
In NLnet Labs Unbound 1.20.0 up to and including 1.25.1, when Unbound is configured with 'serve-expired: yes' and 'serve-expired-client-timeout discard-timeout 0' contrary to the suggested values, the discard-timeout branch during the serve expired logic drops an aged client reply without...
CVE-2026-56444 Degradation of resolution service when 'discard-timeout' and 'serve-expired-client-timeout' are combined in unusual configuration
In NLnet Labs Unbound 1.20.0 up to and including 1.25.1, when Unbound is configured with 'serve-expired: yes' and 'serve-expired-client-timeout discard-timeout 0' contrary to the suggested values, the discard-timeout branch during the serve expired logic drops an aged client reply without...
CVE-2026-56444
CVE-2026-56444 affects NLnet Labs Unbound 1.20.0 through 1.25.1. When configured with serve-expired: yes and serve-expired-client-timeout > discard-timeout > 0, the discard-timeout branch in the serve-expired logic fails to decrement the counter for aged client replies, unlike other branche...
CVE-2026-56444 Degradation of resolution service when 'discard-timeout' and 'serve-expired-client-timeout' are combined in unusual configuration
In NLnet Labs Unbound 1.20.0 up to and including 1.25.1, when Unbound is configured with 'serve-expired: yes' and 'serve-expired-client-timeout discard-timeout 0' contrary to the suggested values, the discard-timeout branch during the serve expired logic drops an aged client reply without...
CVE-2026-55717
In NLnet Labs Unbound 1.10.0 up to and including 1.25.1, when 'serve-expired: yes' is set together with a 'response-ip: redirect' /'response-ip-data: CNAME ' rule or the RPZ 'rpz-cname-override' equivalent, a remote client who controls any delegated domain can crash the daemon. The...
CVE-2026-55717 'serve-expired-client-timeout' and 'response-ip' CNAME redirect could lead to a crash
In NLnet Labs Unbound 1.10.0 up to and including 1.25.1, when 'serve-expired: yes' is set together with a 'response-ip: redirect' /'response-ip-data: CNAME ' rule or the RPZ 'rpz-cname-override' equivalent, a remote client who controls any delegated domain can crash the daemon. The...
CVE-2026-55717
In NLnet Labs Unbound 1.10.0 up to and including 1.25.1, when 'serve-expired: yes' is set together with a 'response-ip: redirect' /'response-ip-data: CNAME ' rule or the RPZ 'rpz-cname-override' equivalent, a remote client who controls any delegated domain can crash the daemon. The...
CVE-2026-55717
Vulnerability CVE-2026-55717 affects NLnet Labs Unbound 1.10.0 through 1.25.1. When serve-expired is yes and a response-ip/ RPZ CNAME-based redirect is configured, a remote attacker controlling any delegated zone can crash the daemon. The serve-expired-client-timeout routine chase loop on the res...
EUVD-2026-47680
In NLnet Labs Unbound 1.10.0 up to and including 1.25.1, when 'serve-expired: yes' is set together with a 'response-ip: redirect' /'response-ip-data: CNAME ' rule or the RPZ 'rpz-cname-override' equivalent, a remote client who controls any delegated domain can crash the daemon. The...
CVE-2026-55717
In NLnet Labs Unbound 1.10.0 up to and including 1.25.1, when 'serve-expired: yes' is set together with a 'response-ip: redirect' /'response-ip-data: CNAME ' rule or the RPZ 'rpz-cname-override' equivalent, a remote client who controls any delegated domain can crash the daemon. The...
CVE-2026-55717 'serve-expired-client-timeout' and 'response-ip' CNAME redirect could lead to a crash
In NLnet Labs Unbound 1.10.0 up to and including 1.25.1, when 'serve-expired: yes' is set together with a 'response-ip: redirect' /'response-ip-data: CNAME ' rule or the RPZ 'rpz-cname-override' equivalent, a remote client who controls any delegated domain can crash the daemon. The...
CVE-2026-46582
In NLnet Labs Unbound 1.6.0 up to and including 1.25.1, a replay of a wildcard rrset as another piece of data, could be briefly considered DNSSEC secure based only on the RRSIG validation and stored into cache, before later validation treats it as bogus based on NSEC validation. When the resolvin...
CVE-2026-46582 A wildcard replay, as another piece of data, triggers poisoning in the serve expired reply path
In NLnet Labs Unbound 1.6.0 up to and including 1.25.1, a replay of a wildcard rrset as another piece of data, could be briefly considered DNSSEC secure based only on the RRSIG validation and stored into cache, before later validation treats it as bogus based on NSEC validation. When the resolvin...
EUVD-2026-47670
In NLnet Labs Unbound 1.6.0 up to and including 1.25.1, a replay of a wildcard rrset as another piece of data, could be briefly considered DNSSEC secure based only on the RRSIG validation and stored into cache, before later validation treats it as bogus based on NSEC validation. When the resolvin...
CVE-2026-46582
Affected software/versions: NLnet Labs Unbound 1.6.0 up to and including 1.25.1. Issue: a replay of a wildcard RRset as another piece of data can be momentarily treated as DNSSEC secure based on RRSIG validation and cached, then misvalidated on the serve-expired path due to later NSEC validation,...
CVE-2026-46582 A wildcard replay, as another piece of data, triggers poisoning in the serve expired reply path
In NLnet Labs Unbound 1.6.0 up to and including 1.25.1, a replay of a wildcard rrset as another piece of data, could be briefly considered DNSSEC secure based only on the RRSIG validation and stored into cache, before later validation treats it as bogus based on NSEC validation. When the resolvin...
PT-2026-63388
Name of the Vulnerable Software and Affected Versions NLnet Labs Unbound versions 1.10.0 through 1.25.1 Description A remote client controlling a delegated domain can cause the daemon to crash, leading to a denial of service. This occurs when the serve-expired: yes setting is enabled alongside a...
PT-2026-63393
Name of the Vulnerable Software and Affected Versions NLnet Labs Unbound versions 1.20.0 through 1.25.1 Description An issue exists when the software is configured with serve-expired: yes and serve-expired-client-timeout is greater than discard-timeout where discard-timeout is greater than 0. In...
