CVE-2026-12244

NSD (the DNS server) is affected when configured as a secondary for a zone. A primary can crash NSD by sending an AXFR containing a DNS message with a specially crafted SVCB RR whose rdata size is 65512, which causes an (uint16_t) length to overflow while allocating space for the RR wrap (total s...

UBUNTU-CVE-2026-12244

If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB RR with an rdata size of 65512, that let's an uint16t variable that is used to allocate space needed for the RR wrap because total size 65535,...

EUVD-2026-24941

A rogue backend can send a crafted SVCB response to a Discovery of Designated Resolvers request, when requested via either the autoUpgrade Lua option to newServer or autoupgrade YAML settings. DDR upgrade is not enabled by default...

CVE-2026-33599

CVE-2026-33599 describes a vulnerability in PowerDNS DNSdist where a rogue backend can send a crafted SVCB response to a Discovery of Designated Resolvers request when triggered via the autoUpgrade (Lua) option to newServer or the auto_upgrade (YAML) setting. DDR upgrade is not enabled by default...

CVE-2026-33599 Out-of-bounds read in service discovery

A rogue backend can send a crafted SVCB response to a Discovery of Designated Resolvers request, when requested via either the autoUpgrade Lua option to newServer or autoupgrade YAML settings. DDR upgrade is not enabled by default...

PowerDNS DNSdist 缓冲区错误漏洞

PowerDNS DNSdist is a proxy software provided by PowerDNS that offers capabilities for DNS traffic load balancing and security protection. PowerDNS DNSdist has a buffer error vulnerability, which stems from malicious backends that can send specially crafted SVCB responses to resolver discovery...

PowerDNS Authoritative Server 输入验证错误漏洞

The PowerDNS Authoritative Server is a DNS server developed by the Dutch company PowerDNS. There is a vulnerability in input validation of the PowerDNS Authoritative Server. This vulnerability arises from operations conducted by administrators who are allowed to use the REST API. Such actions may...

CVE-2026-1425

A security flaw has been discovered in pymumu SmartDNS up to 47.1. This vulnerability affects the function dnsdecoderrhead/dnsdecodeSVCBHTTPS of the file src/dns.c of the component SVBC Record Parser. The manipulation results in stack-based buffer overflow. It is possible to launch the attack...

CVE-2026-1425 pymumu SmartDNS SVBC Record dns.c _dns_decode_SVCB_HTTPS stack-based overflow

A security flaw has been discovered in pymumu SmartDNS up to 47.1. This vulnerability affects the function dnsdecoderrhead/dnsdecodeSVCBHTTPS of the file src/dns.c of the component SVBC Record Parser. The manipulation results in stack-based buffer overflow. It is possible to launch the attack...

PT-2026-4730

A security flaw has been discovered in pymumu SmartDNS up to 47.1. This vulnerability affects the function dns decode rr head/ dns decode SVCB HTTPS of the file src/dns.c of the component SVBC Record Parser. The manipulation results in stack-based buffer overflow. It is possible to launch the...