OESA-2026-3435 unbound security update

Unbound is a validating, recursive, caching DNS resolver. It is designed to be fast and lean and incorporates modern features based on open standards. To help increase online privacy, Unbound supports DNS-over-TLS which allows clients to encrypt their communication. Unbound is available for most...

OESA-2026-3434 unbound security update

Unbound is a validating, recursive, caching DNS resolver. It is designed to be fast and lean and incorporates modern features based on open standards. To help increase online privacy, Unbound supports DNS-over-TLS which allows clients to encrypt their communication. Unbound is available for most...

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...

bind: bind9: DNSSEC Validation Bypass via Out-of-Zone NSEC Next Field

The BIND resolver accepts validly-signed NSEC records where the "Next Domain Name" field points outside the signer's zone...

bind: bind9: Potential memory usage beyond configured limits

A DNSSEC validating resolver that is under a random subdomain attack against a DNSSEC-signed zone can suffer from runaway memory usage. The attacker needs to be able to send queries faster than the resolver can perform validation. The increased memory usage can be orders of magnitude beyond the...

bind: bind9: Incorrect acceptance of NSEC3 records

BIND may accept incorrect child-zone NSEC3 records as valid, which could allow an attacker to forge authenticated NXDOMAIN responses...

bind: bind9: Unexpected exit with NSEC and NSEC3 both present

If a provably insecure domain is covered by both an NSEC and NSEC3 record at the parent, and there exist an RRSIG for only one of these types, then BIND may exit unexpectedly with an assertion while validating this proof...

Important: Red Hat Security Advisory: bind security update

An update for bind is now available for Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions. 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...

USN-8648-1 bind9 vulnerabilities

It was discovered that Bind incorrectly accepted NSEC3 records whose signer name did not match the owning zone. A remote attacker could possibly use this issue to perform NSEC3 impersonation attacks, bypassing DNSSEC validation. CVE-2026-10723 It was discovered that Bind incorrectly handled Key...

USN-8648-1: Bind vulnerabilities

It was discovered that Bind incorrectly accepted NSEC3 records whose signer name did not match the owning zone. A remote attacker could possibly use this issue to perform NSEC3 impersonation attacks, bypassing DNSSEC validation. CVE-2026-10723 It was discovered that Bind incorrectly handled Key...

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...

CVE-2026-44687

An off-by-one error in Unbound's default harden-below-nxdomain logic can lead to a denial of service. When an intermediate label under a DNSSEC-signed zone is queried, the flaw incorrectly bypasses configured stub or forward zones, disrupting their name resolution. Mitigation Disable the...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: bind (UTSA-2026-103697)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-103697 advisory. The BIND resolver accepts validly-signed NSEC records where the Next Domain Name field points outside the signer's zone. This issue affects BIND 9 versions 9.11.0...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: bind (UTSA-2026-103695)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-103695 advisory. If a provably insecure domain is covered by both an NSEC and NSEC3 record at the parent, and there exist an RRSIG for only one of these types, then BIND may exit...

MiracleLinux 8 : bind-9.11.36-16.el8_10.14 (AXSA:2026-1553:08)

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-1553:08 advisory. bind: bind9: DNSSEC Validation Bypass via Out-of-Zone NSEC Next Field CVE-2026-13321 bind: bind9: Potential memory usage beyond configured limits...

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...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: bind (UTSA-2026-103694)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-103694 advisory. A DNSSEC validating resolver that is under a random subdomain attack against a DNSSEC-signed zone can suffer from runaway memory usage. The attacker needs to be able...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: bind (UTSA-2026-103699)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-103699 advisory. 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...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: bind (UTSA-2026-102687)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-102687 advisory. A DNSSEC validating resolver that is under a random subdomain attack against a DNSSEC-signed zone can suffer from runaway memory usage. The attacker needs to be able...

unbound security update

An update is available for unbound. 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 The unbound packages provide a validating, recursive, and caching DNS or DNSS...