CVE-2026-41292 | BDVDB-2026-334232 Detail

Description#

NLnet Labs Unbound up to and including version 1.25.0 is vulnerable to a degradation of service attack related to parsing long lists of incoming EDNS options. An adversary sending queries with too many EDNS options can hold Unbound threads hostage while they are parsing and creating internal data structures for the options. Coordinated attacks can result in degradation and/or denial of service. Unbound 1.25.1 contains a patch with a fix to limit acceptable incoming EDNS options (100).

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Exploit#

History#

1. Version 12026-05-20Record published in the CVE List.
2. Version 22026-09-01Most recent update recorded in the CVE List.