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Package · Debian

unbound

86 known vulnerabilities.

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  • High 7.5
    CVE-2026-97206 Public exploit

    DNS-over-QUIC (DoQ) path-migration can lead to use-after-free on multi-threaded deployments.

    NLnet Labs Unbound, 1.22.0 up to and including version 1.26.1, contains a DNS-over-QUIC (DoQ) lifetime bug reachable by a remote DoQ client under multi-threaded operation. A client-triggered QUIC path migration can enter stream/connection cleanup while a mesh…

    NLnet Labs Unbound unbound unbound Debian Ubuntu
  • Critical 9.1
    CVE-2026-81642 Public exploit

    Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY

    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…

    NLnet Labs Unbound unbound unbound Debian Ubuntu Alpine
  • High 7.5
    CVE-2023-50868 Public exploit EPSS 74%

    The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote att…

    bind9 bind9 bind unbound Debian Ubuntu Alpine
  • High 7.5
    CVE-2023-50387 Public exploit EPSS 100%

    Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to …

    bind9 bind9 bind unbound Debian Ubuntu Alpine