CVE-2026-75029

CVE-2026-75029 affects ISC BIND 9 (versions 9.11.0–9.18.50, 9.20.0–9.20.27, 9.21.0–9.21.25, and corresponding -S1 releases). The message parser fails to deduplicate singleton records (e.g., SOA) in a query response: when an attacker sends multiple copies with identical RDATA, each copy is appende...

CVE-2026-75029

In a query response, an attacker may send named multiple copies of a record that should only exist once such as an SOA record. If the RDATA is the same on all the copies, the record is appended to the in-memory RDATA set, which can cause increased memory usage of the negative cache and possibly...

CVE-2026-75029 Message parser retains every identical singleton RDATA, enabling wire-to-work amplification

In a query response, an attacker may send named multiple copies of a record that should only exist once such as an SOA record. If the RDATA is the same on all the copies, the record is appended to the in-memory RDATA set, which can cause increased memory usage of the negative cache and possibly...

CVE-2026-19667

If an attacker-controlled authoritative server can produce a negative answer that is exactly 65536 bytes, then a flaw in named results in a negative cache entry of 0 bytes. When this entry is subsequently read, named aborts. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 throug...

EUVD-2026-80742

If an attacker-controlled authoritative server can produce a negative answer that is exactly 65536 bytes, then a flaw in named results in a negative cache entry of 0 bytes. When this entry is subsequently read, named aborts. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 throug...

CVE-2026-19667

If an attacker-controlled authoritative server can produce a negative answer that is exactly 65536 bytes, then a flaw in "named" results in a negative cache entry of 0 bytes. When this entry is subsequently read, "named" aborts. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0...

CVE-2026-75029: Asymmetric Resource Consumption (Amplification)

In a query response, an attacker may send named multiple copies of a record that should only exist once such as an SOA record. If the RDATA is the same on all the copies, the record is appended to the in-memory RDATA set, which can cause increased memory usage of the negative cache and possibly...

Linux Distros Unpatched Vulnerability : CVE-2026-19667

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - If an attacker-controlled authoritative server can produce a negative answer that is exactly 65536 bytes, then a flaw in named results in a negative cache entry...

PT-2026-93749

Name of the Vulnerable Software and Affected Versions BIND 9 versions 9.11.0 through 9.18.50 BIND 9 versions 9.20.0 through 9.20.27 BIND 9 versions 9.21.0 through 9.21.25 BIND 9 versions 9.11.3-S1 through 9.18.50-S1 BIND 9 versions 9.20.9-S1 through 9.20.27-S1 Description An attacker can send...

CVE-2026-75029: Asymmetric Resource Consumption (Amplification)

In a query response, an attacker may send named multiple copies of a record that should only exist once such as an SOA record. If the RDATA is the same on all the copies, the record is appended to the in-memory RDATA set, which can cause increased memory usage of the negative cache and possibly...

CVE-2026-19667: Numeric Truncation Error

If an attacker-controlled authoritative server can produce a negative answer that is exactly 65536 bytes, then a flaw in named results in a negative cache entry of 0 bytes. When this entry is subsequently read, named aborts. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 throug...

PT-2026-93736

Name of the Vulnerable Software and Affected Versions BIND 9 versions 9.11.0 through 9.18.50 BIND 9 versions 9.20.0 through 9.20.27 BIND 9 versions 9.21.0 through 9.21.25 BIND 9 versions 9.11.3-S1 through 9.18.50-S1 BIND 9 versions 9.20.9-S1 through 9.20.27-S1 Description A flaw in named occurs...

Linux Distros Unpatched Vulnerability : CVE-2026-75029

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In a query response, an attacker may send named multiple copies of a record that should only exist once such as an SOA record. If the RDATA is the same on all t...

CVE-2026-19667: Numeric Truncation Error

If an attacker-controlled authoritative server can produce a negative answer that is exactly 65536 bytes, then a flaw in named results in a negative cache entry of 0 bytes. When this entry is subsequently read, named aborts. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 throug...

Unity Linux 20.1070e Security Update: unbound (UTSA-2026-035854)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-035854 advisory. 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 do...

K000163001: NLnet Labs Unbound vulnerability CVE-2026-42923

Security Advisory Description 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...

F5 Networks BIG-IP : NLnet Labs Unbound vulnerability (K000163001)

The version of F5 Networks BIG-IP installed on the remote host is prior to 17.1.3.5 / 17.5.1.9 / 21.1.0.2. It is, therefore, affected by a vulnerability as referenced in the K000163001 advisory. NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability in the DNSSEC validator wher...

EulerOS 2.0 SP15 : unbound (EulerOS-SA-2026-2913)

According to the versions of the unbound packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : NLnet Labs Unbound 1.14.0 up to and including version 1.25.0 has a locking inconsistency vulnerability that when certain conditions are met...

SUSE CVE-2026-42923

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...

CVE-2026-42923

A flaw was found in Unbound's DNSSEC validator where the code path for consulting the negative cache for DS records does not honor the limit on NSEC3 hash calculations introduced in version 1.19.1. An adversary who controls a DNSSEC-signed zone can sign NSEC3 records with high iteration counts fo...