Insufficient verification that responses belong to a query_CVE-2026-10846

8.2 / 10

HIGH

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Description

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.

Basic Information

ID CVE-2026-10846

Source NLnet Labs

Published Jun 10, 2026 at 06:37

Affected Product

Vendor NLnet Labs

Product ldns

Version 1.2.0

Affected Versions NLnet Labs ldns 1.2.0

CWE Classification

CWE-346

References

www.nlnetlabs.nl /downloads/ldns/CVE-2026-10846.txt

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    "published": "2026-06-10T06:37:59.538Z",
    "modified": "2026-06-10T06:37:59.538Z",
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