K000161463: NLnet Labs Unbound vulnerability CVE-2026-42960

Security Advisory Description NLnet Labs Unbound up to and including version 1.25.0 is vulnerable to poisoning via promiscuous records for the authority section. Promiscuous RRSets that complement DNS replies in the authority section can be used to trick Unbound to cache such records. If an...

Exploit for CVE-2026-5172

CVE20265172poc CVE-2026-5172: buffer overflow in extractaddre...

CVE-2026-44390 Unbounded name compression in certain cases causes degradation of service

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-2026-44390

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-2026-44390

CVE-2026-44390 affects NLnet Labs Unbound up to 1.25.0. Malicious upstream responses with very large RRsets trigger an unbounded name compression operation, potentially locking CPU and causing degraded performance or denial of service. Unbound 1.25.1 includes a patch that increments the compressi...

NLnet Labs Unbound 安全漏洞

NLnet Labs Unbound is a high-performance DNS resolver open-sourced by NLnet Labs. Versions of NLnet Labs Unbound 1.25.0 and earlier contained security vulnerabilities. These vulnerabilities stemmed from unbound name compression operations when handling large RRsets, which could lead to performanc...

CVE-2026-45557

CVE-2026-45557 affects Technitium DNS Server. The issue is that the server aggressively fetches missing RRSIG records or mismatched DNSKEY records, enabling an attacker that controls a domain to trigger excessive network traffic from a vulnerable system. The vulnerability is fixed in version 15.0...

Astra Linux - уязвимость в unbound

Unbound versions up to and including 1.21.0 contain a vulnerability when handling replies with very large RRsets that it needs to perform name compression on. Malicious upstream responses with very large RRsets can cause Unbound to spend considerable time applying name compression to downstream...

MiracleLinux 9 : bind-9.16.23-34.el9_7.1 (AXSA:2025-11501:12)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2025-11501:12 advisory. bind: Cache poisoning attacks with unsolicited RRs CVE-2025-40778 bind: Cache poisoning due to weak PRNG CVE-2025-40780 Tenable has extracted the...

MiracleLinux 8 : bind-9.11.36-16.el8_10.2 (AXSA:2024-8688:02)

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2024-8688:02 advisory. bind: bind9: BIND's database will be slow if a very large number of RRs exist at the same nam CVE-2024-1737 bind9: bind: SIG0 can be used to exhaust...

CVE-2025-68471 Avahi has a reachable assertion in lookup_start

Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In 0.9-rc2 and earlier, avahi-daemon can be crashed by sending 2 unsolicited announcements with CNAME resource records 2 seconds apart...

CVE-2025-68471

Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In 0.9-rc2 and earlier, avahi-daemon can be crashed by sending 2 unsolicited announcements with CNAME resource records 2 seconds apart...

SUSE CVE-2002-1219

Buffer overflow in named in BIND 4 versions 4.9.10 and earlier, and 8 versions 8.3.3 and earlier, allows remote attackers to execute arbitrary code via a certain DNS server response containing SIG resource records RR...

SUSE CVE-2002-1221

BIND 8.x through 8.3.3 allows remote attackers to cause a denial of service crash via SIG RR elements with invalid expiry times, which are removed from the internal BIND database and later cause a null dereference...

RHEL 7 : bind (RHSA-2025:22205)

"The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:22205 advisory. The Berkeley Internet Name Domain BIND is an implementation of the Domain Name System DNS protocols. BIND includes a DNS server named %NASLMINLEVEL...

RockyLinux 9 : bind (RLSA-2025:21110)

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2025:21110 advisory. bind: Cache poisoning attacks with unsolicited RRs CVE-2025-40778 bind: Cache poisoning due to weak PRNG CVE-2025-40780 Tenable has extracted the...

RockyLinux 9 : bind9.18 (RLSA-2025:21111)

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2025:21111 advisory. bind: Cache poisoning attacks with unsolicited RRs CVE-2025-40778 bind: Cache poisoning due to weak PRNG CVE-2025-40780 bind: Resource exhaustion via...

bind: Cache poisoning attacks with unsolicited RRs

A vulnerability exists in BIND’s DNS resolver logic that makes it overly permissive when accepting resource records RRs in responses. Under certain conditions, this flaw allows attackers to inject unsolicited or forged DNS records into the cache. This can be exploited to poison the resolver cache...

FreeBSD Security Advisory - FreeBSD-SA-25:10.unbound

FreeBSD Security Advisory - Promiscuous NS RRSets that complement DNS replies in the authority section can be used to trick resolvers to update their delegation information for the zone. Usually these RRSets are used to update the resolver's knowledge of the zone's name servers. If a malicious...

RLSA-2025:21034 Important: bind security update

The Berkeley Internet Name Domain BIND is an implementation of the Domain Name System DNS protocols. BIND includes a DNS server named; a resolver library routines for applications to use when interfacing with DNS; and tools for verifying that the DNS server is operating correctly. Security Fixes:...