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    CVE-2026-10846

    NLnet Labs ldns 1.2.0 up to and including versions 1.9.0, when used in applications as (stub) resolver over UDP, lacks matching the query destination address and port with the response source address and port. Furthermore not the query ID, neither the question of the query is matched with that of the response. This makes applications, that use ldns for (stub) resolver functionality over UDP, vulnerable for off-path poisoning attacks. The drill tool, which is shipped with ldns, suffers from this vulnerability.

    Published:Jun 10, 2026
    Last Modified:Jun 10, 2026
    EPS:Jun 10, 2026
    EPSS Score:0.00019
    CVSS Score:8.2

    Affected Products

    Vendor
    Nlnetlabs
    Product
    Ldns

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-346 Origin Validation Error

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    CVE-2014-3209 (CVSS 2.1) — The ldns-keygen tool in ldns 1.6.x uses the current umask to set the privileges of the private key, which migh…
    CVE-2011-3581 (CVSS 6.8) — Heap-based buffer overflow in the ldns_rr_new_frm_str_internal function in ldns before 1.6.11 allows remote at…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High