https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Sat, 03 Oct 2026 12:10:40 +0000 https://cve.radiocsirt.org/vuln/bdu:2026-10809 bdu:2026-10809 https://cve.radiocsirt.org/vuln/bdu:2026-10809 https://cve.radiocsirt.org/vuln/euvd-2026-319580 EUVD-2026-319580 https://cve.radiocsirt.org/vuln/euvd-2026-319580 https://cve.radiocsirt.org/vuln/fkie_cve-2026-42923 <p>NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability in the DNSSEC validator where the code path to consult the negative cache for DS records does not take into account the limit on NSEC3 hash calculations introduced in 1.19.1. This leads to degradation of service during the attack. An adversary that controls a DNSSEC signed zone can exploit this by signing NSEC3 records with acceptably high iterations for child delegations and querying a vulnerable Unbound. Unbound will keep performing the allowed hash calculations on the NSEC3 records and will not limit the work by the mitigation introduced in 1.19.1. As a side effect, a global lock for the negative cache will be held for the duration of the hashing, blocking other threads that need to consult the negative cache. Coordinated attacks could raise the vulnerability to denial of service. Unbound 1.25.1 contains a patch with a fix to bound the vulnerable code path with the existing limit for NSEC3 hash calculations.</p> <p>NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability in the DNSSEC validator where the code path to consult the negative cache for DS records does not take into account the limit on NSEC3 hash calculations introduced in 1.19.1. This leads to degradation of service during the attack. An adversary that controls a DNSSEC signed zone can exploit this by signing NSEC3 records with acceptably high iterations for child delegations and querying a vulnerable Unbound. Unbound will keep performing the allowed hash calculations on the NSEC3 records and will not limit the work by the mitigation introduced in 1.19.1. As a side effect, a global lock for the negative cache will be held for the duration of the hashing, blocking other threads that need to consult the negative cache. Coordinated attacks could raise the vulnerability to denial of service. Unbound 1.25.1 contains a patch with a fix to bound the vulnerable code path with the existing limit for NSEC3 hash calculations.</p> https://cve.radiocsirt.org/vuln/fkie_cve-2026-42923 https://cve.radiocsirt.org/vuln/ghsa-8f6w-8h24-fw66 <p>NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability in the DNSSEC validator where the code path to consult the negative cache for DS records does not take into account the limit on NSEC3 hash calculations introduced in 1.19.1. This leads to degradation of service during the attack. An adversary that controls a DNSSEC signed zone can exploit this by signing NSEC3 records with acceptably high iterations for child delegations and querying a vulnerable Unbound. Unbound will keep performing the allowed hash calculations on the NSEC3 records and will not limit the work by the mitigation introduced in 1.19.1. As a side effect, a global lock for the negative cache will be held for the duration of the hashing, blocking other threads that need to consult the negative cache. Coordinated attacks could raise the vulnerability to denial of service. Unbound 1.25.1 contains a patch with a fix to bound the vulnerable code path with the existing limit for NSEC3 hash calculations.</p> <p>NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability in the DNSSEC validator where the code path to consult the negative cache for DS records does not take into account the limit on NSEC3 hash calculations introduced in 1.19.1. This leads to degradation of service during the attack. An adversary that controls a DNSSEC signed zone can exploit this by signing NSEC3 records with acceptably high iterations for child delegations and querying a vulnerable Unbound. Unbound will keep performing the allowed hash calculations on the NSEC3 records and will not limit the work by the mitigation introduced in 1.19.1. As a side effect, a global lock for the negative cache will be held for the duration of the hashing, blocking other threads that need to consult the negative cache. Coordinated attacks could raise the vulnerability to denial of service. Unbound 1.25.1 contains a patch with a fix to bound the vulnerable code path with the existing limit for NSEC3 hash calculations.</p> https://cve.radiocsirt.org/vuln/ghsa-8f6w-8h24-fw66 https://cve.radiocsirt.org/vuln/msrc_cve-2026-42923 msrc_CVE-2026-42923 https://cve.radiocsirt.org/vuln/msrc_cve-2026-42923 https://cve.radiocsirt.org/vuln/oesa-2026-2606 <p><strong>Affected:</strong> openEuler:22.03-LTS-SP4: unbound</p> <p>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 platforms such as FreeBSD, OpenBSD, NetBSD, MacOS, Linux and Microsoft Windows. Unbound is a totally free, open source software under the BSD license. It doesn&amp;amp;apos;t make custom builds or provide specific features to paying customers only. Security Fix(es):</p> <p>NLnet Labs Unbound 1.6.2 up to and including version 1.25.0 has a denial of service vulnerability when compiled with DNSCrypt support (&amp;apos;--enable-dnscrypt&amp;apos;). A bad DNSCrypt query could underflow Unbound&amp;apos;s DNSCrypt packet reading procedure that may lead to heap overflow. A malicious actor can exploit the vulnerability with a single bad DNSCrypt query that its decrypted plaintext consists entirely of &amp;apos;0x00&amp;apos; bytes and does not contain the expected &amp;apos;0x80&amp;apos; marker. Unbound would then start reading more bytes than necessary until it finds a non-&amp;apos;0x00&amp;apos; byte. Based on the underlying memory allocator and the memory layout, it could lead to heap overflow while reading followed by a crash. Likelihood of a crash is low, since it relies heavily on the underlying memory allocator and the memory layout. If the heap overflow does not happen, Unbound&amp;apos;s later packet checks will deny the packe…</p> <p><strong>Affected:</strong> openEuler:22.03-LTS-SP4: unbound</p> <p>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 platforms such as FreeBSD, OpenBSD, NetBSD, MacOS, Linux and Microsoft Windows. Unbound is a totally free, open source software under the BSD license. It doesn&amp;amp;apos;t make custom builds or provide specific features to paying customers only. Security Fix(es):</p> <p>NLnet Labs Unbound 1.6.2 up to and including version 1.25.0 has a denial of service vulnerability when compiled with DNSCrypt support (&amp;apos;--enable-dnscrypt&amp;apos;). A bad DNSCrypt query could underflow Unbound&amp;apos;s DNSCrypt packet reading procedure that may lead to heap overflow. A malicious actor can exploit the vulnerability with a single bad DNSCrypt query that its decrypted plaintext consists entirely of &amp;apos;0x00&amp;apos; bytes and does not contain the expected &amp;apos;0x80&amp;apos; marker. Unbound would then start reading more bytes than necessary until it finds a non-&amp;apos;0x00&amp;apos; byte. Based on the underlying memory allocator and the memory layout, it could lead to heap overflow while reading followed by a crash. Likelihood of a crash is low, since it relies heavily on the underlying memory allocator and the memory layout. If the heap overflow does not happen, Unbound&amp;apos;s later packet checks will deny the packe…</p> https://cve.radiocsirt.org/vuln/oesa-2026-2606 https://cve.radiocsirt.org/vuln/opensuse-su-2026:10903-1 <p>libunbound8-1.25.1-1.1 on GA media</p> <p>libunbound8-1.25.1-1.1 on GA media</p> https://cve.radiocsirt.org/vuln/opensuse-su-2026:10903-1 https://cve.radiocsirt.org/vuln/rhsa-2026:20357 <p>unbound: Packet of death with DNSCrypt unbound: Unbound: Cache manipulation via &#39;ghost domain names&#39; attack unbound: Unbound DNSSEC Validator NSEC3 Hash Calculation Limit Bypass via Negative Cache Code Path Leading to DoS unbound: Unbound DNS Cache Poisoning via Promiscuous Additional Section RRSet Acceptance</p> <p>unbound: Packet of death with DNSCrypt unbound: Unbound: Cache manipulation via &#39;ghost domain names&#39; attack unbound: Unbound DNSSEC Validator NSEC3 Hash Calculation Limit Bypass via Negative Cache Code Path Leading to DoS unbound: Unbound DNS Cache Poisoning via Promiscuous Additional Section RRSet Acceptance</p> https://cve.radiocsirt.org/vuln/rhsa-2026:20357 https://cve.radiocsirt.org/vuln/suse-su-2026:21874-1 <p>Security update for unbound</p> <p>Security update for unbound</p> https://cve.radiocsirt.org/vuln/suse-su-2026:21874-1 https://cve.radiocsirt.org/vuln/ubuntu-cve-2026-42923 <p><strong>Affected:</strong> Ubuntu:Pro:14.04:LTS: unbound, Ubuntu:Pro:16.04:LTS: unbound, Ubuntu:Pro:18.04:LTS: unbound, Ubuntu:Pro:20.04:LTS: unbound, Ubuntu:22.04:LTS: unbound, Ubuntu:24.04:LTS: unbound, Ubuntu:25.10: unbound, Ubuntu:26.04:LTS: unbound</p> <p>NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability in the DNSSEC validator where the code path to consult the negative cache for DS records does not take into account the limit on NSEC3 hash calculations introduced in 1.19.1. This leads to degradation of service during the attack. An adversary that controls a DNSSEC signed zone can exploit this by signing NSEC3 records with acceptably high iterations for child delegations and querying a vulnerable Unbound. Unbound will keep performing the allowed hash calculations on the NSEC3 records and will not limit the work by the mitigation introduced in 1.19.1. As a side effect, a global lock for the negative cache will be held for the duration of the hashing, blocking other threads that need to consult the negative cache. Coordinated attacks could raise the vulnerability to denial of service. Unbound 1.25.1 contains a patch with a fix to bound the vulnerable code path with the existing limit for NSEC3 hash calculations.</p> <p><strong>Affected:</strong> Ubuntu:Pro:14.04:LTS: unbound, Ubuntu:Pro:16.04:LTS: unbound, Ubuntu:Pro:18.04:LTS: unbound, Ubuntu:Pro:20.04:LTS: unbound, Ubuntu:22.04:LTS: unbound, Ubuntu:24.04:LTS: unbound, Ubuntu:25.10: unbound, Ubuntu:26.04:LTS: unbound</p> <p>NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability in the DNSSEC validator where the code path to consult the negative cache for DS records does not take into account the limit on NSEC3 hash calculations introduced in 1.19.1. This leads to degradation of service during the attack. An adversary that controls a DNSSEC signed zone can exploit this by signing NSEC3 records with acceptably high iterations for child delegations and querying a vulnerable Unbound. Unbound will keep performing the allowed hash calculations on the NSEC3 records and will not limit the work by the mitigation introduced in 1.19.1. As a side effect, a global lock for the negative cache will be held for the duration of the hashing, blocking other threads that need to consult the negative cache. Coordinated attacks could raise the vulnerability to denial of service. Unbound 1.25.1 contains a patch with a fix to bound the vulnerable code path with the existing limit for NSEC3 hash calculations.</p> https://cve.radiocsirt.org/vuln/ubuntu-cve-2026-42923 https://cve.radiocsirt.org/vuln/wid-sec-w-2026-1599 <p>Ein Angreifer kann mehrere Schwachstellen in Unbound ausnutzen, um einen Denial of Service Zustand herbeizuführen, um möglicherweise Code auszuführen und um nicht näher spezifizierte Auswirkungen zu verursachen.</p> <p>Ein Angreifer kann mehrere Schwachstellen in Unbound ausnutzen, um einen Denial of Service Zustand herbeizuführen, um möglicherweise Code auszuführen und um nicht näher spezifizierte Auswirkungen zu verursachen.</p> https://cve.radiocsirt.org/vuln/wid-sec-w-2026-1599