ROOT-OS-DEBIAN-13-CVE-2026-55973 CVE-2026-55973 in unbound - Patched by Root

Root has patched CVE-2026-55973 in the unbound package for Root:Debian:13. Multiple fixed versions available...

ROOT-OS-DEBIAN-12-CVE-2026-55973 CVE-2026-55973 in unbound - Patched by Root

Root has patched CVE-2026-55973 in the unbound package for Root:Debian:12. Multiple fixed versions available...

ROOT-OS-DEBIAN-11-CVE-2026-55973 CVE-2026-55973 in unbound - Patched by Root

Root has patched CVE-2026-55973 in the unbound package for Root:Debian:11. Multiple fixed versions available...

RLSA-2026:55892 Important: unbound security update

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Unbound: Cache poisoning via insufficient RRSIG.Labels validation and premature cache writes CVE-2026-44690 unbound: Unbound: Denial of Service via malformed EDNS Report-Channel opti...

RLSA-2026:55841 Important: unbound security update

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Unbound: Cache poisoning via insufficient RRSIG.Labels validation and premature cache writes CVE-2026-44690 unbound: Unbound: Denial of Service via malformed EDNS Report-Channel opti...

RHEL 9 : unbound (RHSA-2026:55841)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:55841 advisory. The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Unbound: Cache poisoning...

RockyLinux 9 : unbound (RLSA-2026:55841)

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:55841 advisory. unbound: Unbound: Cache poisoning via insufficient RRSIG.Labels validation and premature cache writes CVE-2026-44690 unbound: Unbound: Denial of Service...

Oracle Linux 10 : unbound (ELSA-2026-55892)

The remote Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-55892 advisory. - Fix CVE-2026-55973: dns-error-reporting stack buffer overflow Tenable has extracted the preceding description block directly from the Oracle Linux...

AlmaLinux 9 : unbound (ALSA-2026:55841)

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:55841 advisory. unbound: Unbound: Cache poisoning via insufficient RRSIG.Labels validation and premature cache writes CVE-2026-44690 unbound: Unbound: Denial of Service...

RHEL 10 : unbound (RHSA-2026:55892)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:55892 advisory. The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Unbound: Cache poisonin...

AlmaLinux 10 : unbound (ALSA-2026:55892)

The remote AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:55892 advisory. unbound: Unbound: Cache poisoning via insufficient RRSIG.Labels validation and premature cache writes CVE-2026-44690 unbound: Unbound: Denial of Service...

RockyLinux 10 : unbound (RLSA-2026:55892)

The remote RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:55892 advisory. unbound: Unbound: Cache poisoning via insufficient RRSIG.Labels validation and premature cache writes CVE-2026-44690 unbound: Unbound: Denial of Servic...

Oracle Linux 9 : unbound (ELSA-2026-55841)

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-55841 advisory. 1.24.2-3.4 - Fix CVE-2026-55973 RHEL-212809 Tenable has extracted the preceding description block directly from the Oracle Linux security advisory. No...

Important: Red Hat Security Advisory: unbound security update

An update for unbound is now available for Red Hat Enterprise Linux 10. 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...

Important: Red Hat Security Advisory: unbound security update

An update for unbound 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 t...

unbound security update

1.24.2-3.4 - Fix CVE-2026-55973 RHEL-212809...

ALSA-2026:55841 Important: unbound security update

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Unbound: Cache poisoning via insufficient RRSIG.Labels validation and premature cache writes CVE-2026-44690 unbound: Unbound: Denial of Service via malformed EDNS Report-Channel opti...

Photon OS 5.0: Unbound PHSA-2026-5.0-92-0943

An update of the unbound package has been released. %NASLMINLEVEL 80900 C Tenable, Inc. The descriptive text and package checks in this plugin were extracted from VMware Security Advisory PHSA-2026-5.0-92-0943. The text itself is copyright C VMware, Inc. include'compat.inc'; if description...

UBUNTU-CVE-2026-55973

In NLnet Labs Unbound 1.23.0 up to and including 1.25.1, when 'dns-error-reporting: yes' is set, the EDNS Report-Channel option code 18 from the last upstream response is read and uses the option's length as the length of the agent domain. When a domain name check is performed on the agent domain...

CVE-2026-55973

CVE-2026-55973 affects NLnet Labs Unbound 1.23.0 through 1.25.1. When dns-error-reporting: yes is enabled, the EDNS Report-Channel option (code 18) length from the last upstream response is treated as the length of the agent domain. If the agent domain contains garbage after the domain, those byt...