CVE-2026-93657 hickory-resolver before 0.26.2 DNSSEC Validation Bypass

hickory-resolver versions before 0.26.2 fail to propagate bogus DNSSEC proof states through the Resolver::lookup and Resolver::lookupip APIs, allowing invalid records to be returned as successful results. Attackers controlling the answering zone or positioned on the network path can have forged D...

CVE-2026-93657 hickory-resolver before 0.26.2 DNSSEC Validation Bypass

hickory-resolver versions before 0.26.2 fail to propagate bogus DNSSEC proof states through the Resolver::lookup and Resolver::lookupip APIs, allowing invalid records to be returned as successful results. Attackers controlling the answering zone or positioned on the network path can have forged D...

Amazon Linux 2 : unbound (ALASUNBOUND-1.17-2026-010)

The version of unbound installed on the remote host is prior to 1.17.0-2. It is, therefore, affected by a vulnerability as referenced in the ALAS2UNBOUND-1.17-2026-010 advisory. In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in the DNSSEC validator that enables denial...

Amazon Linux 2 : unbound (ALAS-2026-3928)

The version of unbound installed on the remote host is prior to 1.7.3-15. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3928 advisory. In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in the DNSSEC validator that enables denial of service...

CVE-2026-93657: Improper Verification of Cryptographic Signature

hickory-resolver versions before 0.26.2 fail to propagate bogus DNSSEC proof states through the Resolver::lookup and Resolver::lookupip APIs, allowing invalid records to be returned as successful results. Attackers controlling the answering zone or positioned on the network path can have forged D...

PT-2026-95426

Name of the Vulnerable Software and Affected Versions hickory-resolver versions prior to 0.26.2 Description The software fails to propagate bogus DNSSEC proof states through the Resolver::lookup and Resolver::lookup ip APIs, which allows invalid records to be returned as successful results. This...

ISC BIND 9.11.0 < 9.20.29 / 9.11.3-S1 < 9.20.29-S1 / 9.20.0 < 9.20.29 / 9.20.9-S1 < 9.20.29-S1 / 9.21.0 < 9.21.26 Multiple Vulnerabilities

The version of ISC BIND running on the remote host is 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, or 9.21.0 through 9.21.25. Supported Preview Edition releases 9.11.3-S1 through 9.18.50-S1 and 9.20.9-S1 through 9.20.27-S1 are also affected. It is, therefore, affected by multiple vulnerabiliti...

CVE-2026-81642

A flaw was found in Unbound's DNSSEC validator. A remote attacker can exploit this vulnerability by controlling a malicious zone and sending a specially crafted DNSKEY record. This can lead to a heap buffer overflow, potentially resulting in a denial of service or remote code execution. Mitigatio...

K000163335: BIND vulnerability CVE-2026-11622

Security Advisory Description A DNSSEC validating resolver that is under a random subdomain attack against a DNSSEC-signed zone can suffer from runaway memory usage. The attacker needs to be able to send queries faster than the resolver can perform validation. The increased memory usage can be...

Critical Unbound DNSSEC Validator Flaw Could Allow RCE via a Malicious DNS Zone

Every release of the Unbound DNS resolver before 1.26.1 has a critical heap overflow in its DNSSEC validator, maintainer NLnet Labs said in an advisory on Wednesday. An attacker who controls a malicious zone and queries a vulnerable resolver can trigger it, enabling remote code execution. Unbound...

unbound: Unbound: Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY

A flaw was found in Unbound's DNSSEC validator. A remote attacker can exploit this vulnerability by controlling a malicious zone and sending a specially crafted DNSKEY record. This can lead to a heap buffer overflow, potentially resulting in a denial of service or remote code execution...

unbound: Unbound: ZONEMD verification bypass due to asynchronous DNSSEC resolution

A vulnerability in Unbound allows tampered DNS records in ZONEMD-configured zones below a trust anchor to be served or saved before integrity checks complete. Asynchronous DS/DNSKEY resolution creates a time window where unverified data is processed. If this compromised data is written to disk, i...

unbound: Unbound: Heap buffer overflow via malicious DNSSEC response

A flaw was found in Unbound. This vulnerability allows a remote attacker to cause a heap buffer overflow during the processing of DNSSEC responses. By sending a specially crafted DNSSEC response, a malicious server or an attacker tampering with network traffic can trigger this flaw. This could le...

unbound: Unbound: Denial of Service via algorithmic complexity attacks on DNSSEC

A flaw was found in Unbound. This vulnerability, termed 'ReTrap', allows a remote attacker to launch algorithmic complexity attacks on the Domain Name System Security Extensions DNSSEC validation process. By serving malicious zones or responses, an attacker can exploit various mechanisms, such as...

Critical: unbound

Issue Overview: 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 dige...

F5 Networks BIG-IP : BIND vulnerability (K000163335)

The version of F5 Networks BIG-IP installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the K000163335 advisory. A DNSSEC validating resolver that is under a random subdomain attack against a DNSSEC-signed zone can suffer from...

CVE-2026-19662

A flaw was found in BIND 9. A remote attacker can cause a named resolver to stop functioning Denial of Service by inducing the victim resolver to send multiple queries for a DNSSEC-signed zone. If the attacker's authoritative server responds with a specific sequence of crafted answers that arrive...

bind: BIND: Denial of Service via invalid DNSSEC records

A flaw was found in BIND, a widely used Domain Name System DNS software. A remote attacker could exploit this vulnerability by sending a large number of specially crafted, invalid DNSSEC Domain Name System Security Extensions records to a BIND recursive resolver. This could lead to excessive...

bind: BIND: Denial of Service via crafted DNSSEC reply

A flaw was found in BIND. A remote attacker, by sending a specially crafted DNSSEC-signed authoritative zone reply, can trigger an unexpected program exit in the validating resolver. This can lead to a Denial of Service DoS for the affected BIND resolver...

bind9: bind: BIND 9: DNSSEC bypass via NSEC3 insecure-referral proof

A flaw was found in BIND 9. A remote attacker could exploit a vulnerability where a validly signed NSEC3 record from an unrelated DNS zone might be accepted as proof of insecurity. This could downgrade a secure delegation, allowing forged unsigned DNS answers to be accepted by the resolver,...