CVE-2026-85501

NLnet Labs Unbound up to and including 1.26.0 is vulnerable to a set of DNSSEC algorithmic complexity attacks collectively termed ReTrap . Four distinct vectors are identified: TagTrap (mismatched DNSKEY, RRSIG, and DS records in responses), DelegationTrap (iterative chain-of-trust validation fro...

EUVD-2026-80293

NLnet Labs Unbound 1.12.0 up to and including 1.26.0 has a use-after-free vulnerability when compiled for DNS-over-HTTPs support with '--with-libnghttp2'. During failure code paths i.e., RPZ drop query, jostle due to heavy traffic, a dropped DoH stream brings down the whole DoH session and does n...

CVE-2026-82717

NLnet Labs Unbound versions up to and including 1.26.0 are affected by a heap buffer overflow in CNAME synthesis during upstream response processing. When the resolver enforces a max TTL value in the packet buffer, a compression pointer pointing to the overwritten value invalidates the domain nam...

EUVD-2026-80292

In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in that can progressively corrupt heap memory and under certain systems and compilation options could lead to remote code execution. The vulnerability starts when CNAME synthesis during an upstream response needs to...

CVE-2026-81642

NLnet Labs Unbound (up to and including 1.26.0 ) contains a heap buffer overflow in the DNSSEC validator when digesting DNSKEY records. A DNSKEY with an owner compression pointer referencing its own RDATA can overflow the digest buffer, enabling denial of service and possible remote code executio...

EUVD-2026-80291

In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in the DNSSEC validator that enables denial of service and possible remote code execution as a result of digesting DNSKEYs. A DNSKEY with an owner compression pointer to its own RDATA can overflow the digest buffer. Remot...

CVE-2026-81634

NLnet Labs Unbound up to and including 1.26.0 is affected by a heap buffer overflow in the RRSet canonicalisation routine. The root cause is a missing first owner name in the buffer length check, which can be triggered by a 255-length query name combined with a large TCP response. Since canonical...

EUVD-2026-80290

In NLnet Labs Unbound up to and including 1.26.0, a 255 length query name with a large TCP response can lead to a heap buffer overflow during the RRSet canonicalisation routine. This is caused by missing to add the first owner name into the buffer length check. A malicious actor operating a...

CVE-2026-78227

NLnet Labs Unbound versions 1.22.0 through 1.26.1 contain a use-after-free vulnerability in the DNS-over-QUIC (DoQ) implementation, triggered only when compiled with '--with-libngtcp2'. The root cause is that ngtcp2's retransmission buffer retains a shallow pointer into a per-stream output buffer...

EUVD-2026-80288

NLnet Labs Unbound 1.22.0 up to and including 1.26.1, has a use-after-free vulnerability when compiled for DNS-over-QUIC support with '--with-libngtcp2'. Each DoQ stream owns an output buffer that holds the DNS response. ngtcp2's retransmission buffer keeps a shallow pointer into the output buffe...

CVE-2026-77955

NLnet Labs Unbound versions 1.13.2 through 1.26.1 are affected by a timing window in ZONEMD verification for zones configured with zonemd-check: yes located below (but not at) a trust anchor. The root cause is the asynchronous DS/DNSKEY resolution required before the ZONEMD integrity check comple...

EUVD-2026-80287

In NLnet Labs Unbound 1.13.2 up to and including 1.26.1, a vulnerability in ZONEMD configured zones zonemd-check: yes which are located below but not at a trust anchor allow for an attack window where tampered with zone contents are served or stored to disk prior to the ZONEMD integrity check. Th...

nsd

NSD The NLnet Labs Name Server Daemon NSD is an authoritative DNS name server. It has been developed for operations in environments where speed, reliability, stability and security are of high importance. If you have any feedback, we would love to hear from you. Don’t hesitate to create an issue ...

frida-interception-and-unpinning

Frida 移动端拦截脚本 !Funded by NLnet - NGI Zero...

NSD -- multiple vulnerabilities

NLnet Labs reports: CVE-2026-18664: IP range access control restrictions are bypassed for some unintended IP. Reported by Qifan Zhang from Palo Alto Networks, Claude and Ada Logics. CVE-2026-18916: Any remote client can denial TCP service by throttling the TCP receive window down to 1. Reported b...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: unbound (UTSA-2026-104806)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-104806 advisory. In NLnet Labs Unbound up to and including version 1.25.1, when 'unwanted-reply-threshold' is enabled set to any value greater than zero, glue records of 0.0.0.0/::0...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: unbound (UTSA-2026-104805)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-104805 advisory. In NLnet Labs Unbound 1.4.22 up to and including 1.25.1, UDP source port is randomized and intended to serve as a secret value that increases the entropy of DNS...

Security Bulletin: IBM Watson Speech Services Cartridge is vulnerable to a heap overflow in NLnet Labs Unbound [CVE-2026-42944]

Summary IBM Watson Speech Services Cartridge is vulnerable to a heap overflow in NLnet Labs Unbound, due to an issue that results in heap overflow when encoding multiple NSID and/or DNS Cookie EDNS and/or EDNS Padding options in the reply packet CVE-2026-42944. NLnet Labs Unbound is used as part ...

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 (K000162865)

The version of F5 Networks BIG-IP installed on the remote host is prior to 17.1.3.5 / 17.1.5.9 / 21.1.0.2. It is, therefore, affected by a vulnerability as referenced in the K000162865 advisory. NLnet Labs Unbound 1.14.0 up to and including version 1.25.0 has a locking inconsistency vulnerability...