18 matches found
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-2026-52863 Memory corruption could lead to crash and denial of service
In NLnet Labs Unbound 1.25.0 up to and including 1.25.1, a fix that makes the 'respip' and 'dns64' modules work together, creates a shallow copy of the view name in effect that could lead to memory corruption if the owner of the original view name is jostled out when Unbound is under pressure...
CVE-2026-44690
In NLnet Labs Unbound 1.7.0 up to and including 1.25.1, insufficient validation of the RRSIG.Labels field combined with premature cache writes during RFC 8198 aggressive NSEC processing leads to cache poisoning that permits a malicious actor controlling a single delegated zone to poison arbitrary...
EulerOS 2.0 SP12 : unbound (EulerOS-SA-2026-2574)
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 up to and including version 1.25.0 is vulnerable to poisoning via promiscuous records for the authority section. Promiscuous...
CVE-2026-36618
Mercusys AC12G EU V1 with firmware AC12GEUV1200909 responds to version.bind CHAOS TXT queries, disclosing the DNS resolver software version unbound 1.22.0, aiding targeted attacks against known vulnerabilities...
EUVD-2026-34155
Mercusys AC12G EU V1 with firmware AC12GEUV1200909 responds to version.bind CHAOS TXT queries, disclosing the DNS resolver software version unbound 1.22.0, aiding targeted attacks against known vulnerabilities...
CVE-2026-36618
Mercusys AC12G EU V1 with firmware AC12GEUV1200909 responds to version.bind CHAOS TXT queries, disclosing the DNS resolver software version unbound 1.22.0, aiding targeted attacks against known vulnerabilities...
Important: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
An update for Red Hat Hardened Images RPMs is now available. This update includes the following RPMs: unbound: python3-unbound-1.25.1-0.1.hum1 aarch64, x8664 unbound-1.25.1-0.1.hum1 aarch64, x8664 unbound-anchor-1.25.1-0.1.hum1 aarch64, x8664 unbound-devel-1.25.1-0.1.hum1 aarch64, x8664...
CVE-2026-44390
NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability when handling replies with very large RRsets that Unbound needs to perform name compression for. Malicious upstream responses with very large RRsets with records that don't share a suffix above the root can cause Unbound to...
CVE-2026-42959 Crash during DNSSEC validation of malicious content
NLnet Labs Unbound up to and including version 1.25.0 has a denial of service vulnerability in the DNSSEC validator that can lead to a crash given malicious upstream replies. When Unbound constructs chase-reply messages for validation, the code uses the wrong counter to calculate write offsets fo...
Astra Linux – Vulnerability in unbound
Before version 1.9.5, Unbound allowed configuration injection in the createunboundadservers.sh script after a successful man-in-the-middle attack on a cleartext HTTP session. NOTE: The vendor does not consider this a vulnerability of the Unbound software. createunboundadservers.sh is a contribute...
MiracleLinux 9 : unbound-1.16.2-18.el9_6 (AXSA:2025-10520:03)
The remote MiracleLinux 9 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2025-10520:03 advisory. unbound: Unbounded name compression could lead to Denial of Service CVE-2024-8508 Tenable has extracted the preceding description block directly from the...
TencentOS Server 4: unbound (TSSA-2025:0633)
The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2025:0633 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:...
unbound:1.16.2 security update
1.16.2-8.1 - Fix unbounded name compression could lead to Denial of Service CVE-2024-8508 1.16.2-8 - Ensure group access correction reaches also updated configs CVE-2024-1488 1.16.2-7 - Ensure only unbound group can change configuration CVE-2024-1488 1.16.2-6 - Fix KeyTrap - Extreme CPU consumpti...
Medium: unbound
Issue Overview: NLnet Labs Unbound up to and including version 1.21.0 contains a vulnerability when handling replies with very large RRsets that it needs to perform name compression for. Malicious upstreams responses with very large RRsets can cause Unbound to spend a considerable time applying...
unbound: infinite loop via malformed DNS answers received from upstream servers
A flaw was found in unbound in versions prior to 1.10.1. An infinite loop can be created when malformed DNS answers are received from upstream servers. The highest threat from this vulnerability is to system availability...
