A wildcard replay, as another piece of data, triggers poisoning in the serve expired reply path

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Cross-zone wildcard cache poisoning via RRSIG.labels manipulation

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CVE-2026-52684

The CVE-2026-52684 entry describes a vulnerability in the Prefetch feature that can enable a persistent ghost domain cache poisoning attack. Affected scenario occurs when the auth response is very slow and records expire between fetches; TTL capping is not enforced due to lack of data, unlike reg...

Security Bulletin: IBM Sterling Connect:Direct Web Services is Affected by Multiple Vulnerabilities.

Summary netty-resolver-dns-4.2.13.Final.jar is used by IBM Sterling Connect:Direct Web Services CVE-2026-45673, CVE-2026-45674, CVE-2026-47691. Vulnerability Details CVEID:CVE-2026-45673 DESCRIPTION: Netty is a network application framework for development of protocol servers and clients. Prior t...

[SECURITY] [DSA 6395-1] bind9 security update

------------------------------------------------------------------------- Debian Security Advisory DSA-6395-1 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso July 22, 2026 https://www.debian.org/security/faq -...

CVE-2026-11721

It is possible for an attacker's zone to respond to a query with an RRSIG that has a smaller number of labels than the zone in which the RRSIG is contained. This causes named to produce a wildcard name for a zone that is shorter than the attacker's zone, which can result in cache poisoning. For...

CVE-2026-11721

It is possible for an attacker's zone to respond to a query with an RRSIG that has a smaller number of labels than the zone in which the RRSIG is contained. This causes named to produce a wildcard name for a zone that is shorter than the attacker's zone, which can result in cache poisoning. For...

ALPINE-CVE-2026-11721

It is possible for an attacker's zone to respond to a query with an RRSIG that has a smaller number of labels than the zone in which the RRSIG is contained. This causes named to produce a wildcard name for a zone that is shorter than the attacker's zone, which can result in cache poisoning. For...

CVE-2026-50252

In NLnet Labs Unbound 1.4.22 up to and including 1.25.1, UDP source port is randomized and intended to serve as a secret value that increases the entropy of DNS transactions. When resolver load balancing policies depend on the source port while their outcome is revealed this secrecy is undermined...

CVE-2026-50252

In NLnet Labs Unbound 1.4.22 up to and including 1.25.1, UDP source port is randomized and intended to serve as a secret value that increases the entropy of DNS transactions. When resolver load balancing policies depend on the source port while their outcome is revealed this secrecy is undermined...

ALPINE-CVE-2026-50252

In NLnet Labs Unbound 1.4.22 up to and including 1.25.1, UDP source port is randomized and intended to serve as a secret value that increases the entropy of DNS transactions. When resolver load balancing policies depend on the source port while their outcome is revealed this secrecy is undermined...

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-2026-44690

In NLnet Labs Unbound 1.7.0 up to and including 1.25.1, insufficient validation of the RRSIG.Labels field combined with premature cache writes during RFC 8198 aggressive NSEC processing leads to cache poisoning that permits a malicious actor controlling a single delegated zone to poison arbitrary...

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-2026-44690

In NLnet Labs Unbound 1.7.0 up to and including 1.25.1, insufficient validation of the RRSIG.Labels field combined with premature cache writes during RFC 8198 aggressive NSEC processing leads to cache poisoning that permits a malicious actor controlling a single delegated zone to poison arbitrary...

ALPINE-CVE-2026-44690

In NLnet Labs Unbound 1.7.0 up to and including 1.25.1, insufficient validation of the RRSIG.Labels field combined with premature cache writes during RFC 8198 aggressive NSEC processing leads to cache poisoning that permits a malicious actor controlling a single delegated zone to poison arbitrary...

unbound: Unbound: DNS response policy replacement via hostname spoofing

A flaw in Unbound allows a remote attacker to replace an authenticated or Response Policy Zone RPZ by spoofing DNS records for configured primary hostnames. This enables the attacker to impersonate the primary server, leading to DNS cache poisoning or traffic redirection...

unbound: Unbound: DNS cache poisoning via UDP source port predictability

A flaw in Unbound's SOREUSEPORT implementation reduces UDP source port entropy by allowing attackers to map ports to specific worker threads. This enables DNS cache poisoning, potentially leading to traffic redirection or unauthorized information disclosure...

EUVD-2026-47709

It is possible for an attacker's zone to respond to a query with an RRSIG that has a smaller number of labels than the zone in which the RRSIG is contained. This causes named to produce a wildcard name for a zone that is shorter than the attacker's zone, which can result in cache poisoning. For...

CVE-2026-11721

CVE-2026-11721 describes a cache-poisoning risk in BIND 9 when an attacker’s DNS zone responds with an RRSIG that contains fewer labels than the zone hosting the RRSIG. This causes named to generate a wildcard name for a zone shorter than the attacker’s, potentially enabling cache poisoning. The ...