Important: unbound

Issue Overview: NLnet Labs Unbound 1.19.1 up to and including version 1.25.0 has a vulnerability in the DNSSEC validator that enables denial of service and possible remote code execution as a result of deep copying a data structure and erroneously overwriting a destination pointer. An adversary c...

Amazon Linux 2 : unbound, --advisory ALAS2-2026-3322 (ALAS-2026-3322)

The version of unbound installed on the remote host is prior to 1.7.3-15. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3322 advisory. NLnet Labs Unbound 1.19.1 up to and including version 1.25.0 has a vulnerability in the DNSSEC validator that enables...

Security update for unbound

This update for unbound fixes the following issues CVE-2026-32792: Packet of death with DNSCrypt bsc1265583. CVE-2026-33278: Possible remote code execution during DNSSEC validation bsc1265587. CVE-2026-40622: "Ghost domain name" variant bsc1265581. CVE-2026-41292: Parsing a long list of incoming...

SUSE-SU-2026:2281-1 Security update for unbound

This update for unbound fixes the following issues - CVE-2026-32792: Packet of death with DNSCrypt bsc1265583. - CVE-2026-33278: Possible remote code execution during DNSSEC validation bsc1265587. - CVE-2026-40622: 'Ghost domain name' variant bsc1265581. - CVE-2026-41292: Parsing a long list of...

ALSA-2026:23231 Important: unbound security update

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Heap overflow and crash with multiple nsid, cookie, padding EDNS options CVE-2026-42944 unbound: Unbound DNSSEC Validator Denial of Service via Incorrect Write Offset Counter in...

USN-8282-2: Unbound vulnerabilities

USN-8282-1 fixed vulnerabilities in Unbound. This update provides the corresponding updates for CVE-2026-41292 in Ubuntu 18.04 LTS and Ubuntu 20.04 LTS and CVE-2026-42959, CVE-2026-42960 in Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. Original advisory details: Andr...

SUSE CVE-2026-42944

NLnet Labs Unbound 1.14.0 up to and including version 1.25.0 has a vulnerability that results in heap overflow when encoding multiple NSID and/or DNS Cookie EDNS and/or EDNS Padding options in the reply packet. The relevant options 'nsid', 'answer-cookie', 'pad-responses' default need to be enabl...

SUSE-SU-2026:21874-1 Security update for unbound

This update for unbound fixes the following issues - CVE-2026-32792: Packet of death with DNSCrypt bsc1265583. - CVE-2026-33278: Possible remote code execution during DNSSEC validation bsc1265587. - CVE-2026-40622: "Ghost domain name" variant bsc1265581. - CVE-2026-41292: Parsing a long list of...

Long list of incoming EDNS options degrades performance

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CVE-2026-42944

NLnet Labs Unbound 1.14.0 up to and including version 1.25.0 has a vulnerability that results in heap overflow when encoding multiple NSID and/or DNS Cookie EDNS and/or EDNS Padding options in the reply packet. The relevant options 'nsid', 'answer-cookie', 'pad-responses' default need to be enabl...

CVE-2026-42944

NLnet Labs Unbound 1.14.0 up to and including version 1.25.0 has a vulnerability that results in heap overflow when encoding multiple NSID and/or DNS Cookie EDNS and/or EDNS Padding options in the reply packet. The relevant options 'nsid', 'answer-cookie', 'pad-responses' default need to be enabl...

CVE-2026-41292

NLnet Labs Unbound up to and including version 1.25.0 is vulnerable to a degradation of service attack related to parsing long lists of incoming EDNS options. An adversary sending queries with too many EDNS options can hold Unbound threads hostage while they are parsing and creating internal data...

EUVD-2026-31078

NLnet Labs Unbound up to and including version 1.25.0 is vulnerable to a degradation of service attack related to parsing long lists of incoming EDNS options. An adversary sending queries with too many EDNS options can hold Unbound threads hostage while they are parsing and creating internal data...

Linux Distros Unpatched Vulnerability : CVE-2026-42944

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - NLnet Labs Unbound 1.14.0 up to and including version 1.25.0 has a vulnerability that results in heap overflow when encoding multiple NSID and/or DNS Cookie EDN...

Unbound -- Multiple vulnerabilities

NLnet Labs reports: This release consolidates security fixes for issues reported over a period of time. There are fixes for: CVE-2026-33278: Possible remote code execution during DNSSEC validation. CVE-2026-42944: Heap overflow and crash with multiple nsid, cookie, padding EDNS options...

Linux Distros Unpatched Vulnerability : CVE-2026-41292

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - NLnet Labs Unbound up to and including version 1.25.0 is vulnerable to a degradation of service attack related to parsing long lists of incoming EDNS options. A...

CVE-2026-41292

NLnet Labs Unbound up to and including version 1.25.0 is vulnerable to a degradation of service attack related to parsing long lists of incoming EDNS options. An adversary sending queries with too many EDNS options can hold Unbound threads hostage while they are parsing and creating internal data...

SUSE CVE-2026-27854

An attacker might be able to trigger a use-after-free by sending crafted DNS queries to a DNSdist using the DNSQuestion:getEDNSOptions method in custom Lua code. In some cases DNSQuestion:getEDNSOptions might refer to a version of the DNS packet that has been modified, thus triggering a...

EUVD-2026-17409

An attacker might be able to trigger a use-after-free by sending crafted DNS queries to a DNSdist using the DNSQuestion:getEDNSOptions method in custom Lua code. In some cases DNSQuestion:getEDNSOptions might refer to a version of the DNS packet that has been modified, thus triggering a...

CVE-2026-27854

An attacker might be able to trigger a use-after-free by sending crafted DNS queries to a DNSdist using the DNSQuestion:getEDNSOptions method in custom Lua code. In some cases DNSQuestion:getEDNSOptions might refer to a version of the DNS packet that has been modified, thus triggering a...