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.
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Affected Vendors & Products
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History
Wed, 10 Jun 2026 15:30:00 +0000
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ssvc
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Wed, 10 Jun 2026 12:30:00 +0000
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Wed, 10 Jun 2026 10:45:00 +0000
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Nlnetlabs
Nlnetlabs ldns |
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Nlnetlabs
Nlnetlabs ldns |
Wed, 10 Jun 2026 06:45:00 +0000
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| 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. | |
| Title | Insufficient verification that responses belong to a query | |
| Weaknesses | CWE-346 | |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: NLnet Labs
Published: 2026-06-10T06:37:59.538Z
Updated: 2026-06-10T14:45:59.412Z
Reserved: 2026-06-04T12:06:54.996Z
Link: CVE-2026-10846
Updated: 2026-06-10T11:15:23.130Z
Status : Received
Published: 2026-06-10T07:16:24.443
Modified: 2026-06-10T12:16:24.957
Link: CVE-2026-10846
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