ioc2rpz

ioc2rpz™ makes your threat intelligence actionable Table of Contents Short Summary Overview ioc2rpz™ is a place where threat intelligence meets DNS Architecture Overview How to use ioc2rpz™ ioc2rpz™ web interface Protocol Support Port Summary UDP Port 53 TCP Port 53 DNS over TLS / DoT Port 853 DN...

CVE-2026-82720

NLnet Labs Unbound versions 1.12.0 through 1.26.0 contain a use-after-free vulnerability in the DNS-over-HTTPs (DoH) code path when compiled with --with-libnghttp2. During failure code paths (e.g., RPZ drop query or jostle due to heavy traffic), a dropped DoH stream tears down the entire DoH sess...

F5 Networks BIG-IP : BIND vulnerability (K000163234)

The version of F5 Networks BIG-IP installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the K000163234 advisory. An attacker who knows or guesses that a resolver uses RPZ with wildcard CNAME policies can craft query names long enou...

Fedora 43 : bind (2026-875d2a5154)

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-875d2a5154 advisory. Fixes multiple CVEs - Potential wildcard CNAME RPZ policy bypass CVE-2026-11331 - Key Record using PRIVATEDNS algorithm may lead to exit...

Fedora 44 : bind (2026-d87e7f498a)

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-d87e7f498a advisory. Fixes multiple CVEs - Potential wildcard CNAME RPZ policy bypass CVE-2026-11331 - Key Record using PRIVATEDNS algorithm may lead to exit...

RHEL 9 : bind (RHSA-2026:57189)

"The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:57189 advisory. The Berkeley Internet Name Domain BIND is an implementation of the Domain Name System DNS protocols. BIND includes a DNS server named...

bind9: bind: Potential wildcard CNAME RPZ policy bypass

A flaw was found in BIND 9, a widely used Domain Name System DNS software. A remote attacker could exploit this by sending specially crafted, excessively long DNS queries. This could bypass Response Policy Zone RPZ rules, which are designed to block access to malicious domains, and potentially...

CVE-2026-50243

A flaw in Unbound's respip module fails to verify the security status of incoming DNS answers when using response-ip rules or RPZ files. A remote attacker can exploit this by spoofing DNS answers to bypass DNSSEC protections and trigger unauthorized rewrites, redirecting clients to unintended...

AlmaLinux 9 : bind9.18 (ALSA-2026:55442)

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:55442 advisory. bind9: bind: Potential wildcard CNAME RPZ policy bypass CVE-2026-11331 bind: bind9: DNSSEC Validation Bypass via Out-of-Zone NSEC Next Field CVE-2026-133...

CVE-2026-55717

A flaw in Unbound allows a remote attacker controlling a delegated domain to trigger a NULL pointer dereference and crash the daemon. Exploitation occurs when serve-expired: yes and specific response-ip or RPZ rules are configured, resulting in a denial of service. Mitigation Ensure serve-expired...

CVE-2026-50248

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. Mitigation Configure...

RLSA-2026:55437 Important: bind security update

The Berkeley Internet Name Domain BIND is an implementation of the Domain Name System DNS protocols. BIND includes a DNS server named; a resolver library routines for applications to use when interfacing with DNS; and tools for verifying that the DNS server is operating correctly. Security Fixes:...

RLSA-2026:55442 Important: bind9.18 security update

BIND Berkeley Internet Name Domain is an implementation of the DNS Domain Name System protocols. BIND includes a DNS server named, which resolves host names to IP addresses; a resolver library routines for applications to use when interfacing with DNS; and tools for verifying that the DNS server ...

bind9.18 security update

An update is available for bind9.18. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list BIND Berkeley Internet Name Domain is an implementation of the DNS Domain Na...

Important: Red Hat Security Advisory: bind9.18 security update

An update for bind9.18 is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from...

bind9: bind: Potential wildcard CNAME RPZ policy bypass

A flaw was found in BIND 9, a widely used Domain Name System DNS software. A remote attacker could exploit this by sending specially crafted, excessively long DNS queries. This could bypass Response Policy Zone RPZ rules, which are designed to block access to malicious domains, and potentially...

bind9: bind: Potential wildcard CNAME RPZ policy bypass

A flaw was found in BIND 9, a widely used Domain Name System DNS software. A remote attacker could exploit this by sending specially crafted, excessively long DNS queries. This could bypass Response Policy Zone RPZ rules, which are designed to block access to malicious domains, and potentially...

Important: Red Hat Security Advisory: bind security update

An update for bind is now available for Red Hat Enterprise Linux 9.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for ea...

bind9: bind: Potential wildcard CNAME RPZ policy bypass

A flaw was found in BIND 9, a widely used Domain Name System DNS software. A remote attacker could exploit this by sending specially crafted, excessively long DNS queries. This could bypass Response Policy Zone RPZ rules, which are designed to block access to malicious domains, and potentially...

RHEL 9 : bind (RHSA-2026:55441)

"The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:55441 advisory. The Berkeley Internet Name Domain BIND is an implementation of the Domain Name System DNS protocols. BIND includes a DNS server named...