A vulnerability was found in NLnet Labs Unbound up to 1.25.1. It has been rated as very critical. This vulnerability affects unknown code of the component DNSCrypt. The manipulation leads to heap-based buffer overflow.
This vulnerability is traded as CVE-2026-40691. It is possible to initiate the attack remotely. There is no exploit available.
Upgrading the affected component is advised.
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CVE-2026-40691 | NLnet Labs Unbound up to 1.25.1 DNSCrypt heap-based overflow (WID-SEC-2026-2492)
A vulnerability was found in NLnet Labs Unbound up to 1.25.1. It has been rated as very critical. This vulnerability affects unknown code of the component DNSCrypt. The manipulation leads to heap-based buffer overflow. This vulnerability…
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