EUVD-2026-54225

Contiki-NG's DNS/mDNS resolver skipname in os/services/resolv/resolv.c walks DNS wire-format name labels with no packet-boundary check, and the caller in newdata invokes it in a loop iterating nquestions times from the attacker-controlled DNS header before validating the transaction ID. An attack...

CVE-2026-5856: Out-of-bounds Read

Contiki-NG's DNS/mDNS resolver skipname in os/services/resolv/resolv.c walks DNS wire-format name labels with no packet-boundary check, and the caller in newdata invokes it in a loop iterating nquestions times from the attacker-controlled DNS header before validating the transaction ID. An attack...

PT-2026-68758

Name of the Vulnerable Software and Affected Versions Contiki-NG affected versions not specified Description The DNS/mDNS resolver contains an issue where the skip name function in os/services/resolv/resolv.c processes DNS wire-format name labels without performing packet-boundary checks. The...

CVE-2026-10657

Zephyr's DNS resolver detects mDNS .local queries in dnsresolvenameinternal subsys/net/lib/dns/resolve.c with memcmpstrrchrquery, '.', ".local", 7, which always reads a fixed 7 bytes from the suffix pointer. When the resolved hostname's final label is shorter than 7 bytes e.g. names ending in .or...

AZL-75207 CVE-2026-24401 affecting package avahi for versions less than 0.8-7

Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In versions 0.9rc2 and below, avahi-daemon can be crashed via a segmentation fault by sending an unsolicited mDNS response containing a recursive CNAME record, where the alias and canonica...

Videolabs libmicrodns 0.1.0 rr_decode return value remote code execution vulnerability

Summary An exploitable code execution vulnerability exists in the label-parsing functionality of Videolabs libmicrodns 0.1.0. When parsing compressed labels in mDNS messages, the rrdecode function’s return value is not checked, leading to a double free that could be exploited to execute arbitrary...

Videolabs libmicrodns 0.1.0 resource allocation denial-of-service vulnerabilities

Summary Multiple exploitable denial-of-service vulnerabilities exist in the resource allocation handling of Videolabs libmicrodns 0.1.0. When encountering errors while parsing mDNS messages, some allocated data is not freed, possibly leading to a denial-of-service condition via resource exhaustio...