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Vulnerabilities of NLnet Labs unbound

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CVE Summary Score Published
CVE-2025-5994 A multi-vendor cache poisoning vulnerability named 'Rebirthday Attack' has been discovered in caching resolvers that… 8.7 High Jul 16, 2025
CVE-2024-8508 NLnet Labs Unbound up to and including version 1.21.0 contains a vulnerability when handling replies with very large… 5.3 Medium Oct 3, 2024
CVE-2024-1931 NLnet Labs Unbound version 1.18.0 up to and including version 1.19.1 contain a vulnerability that can cause denial of… 7.5 High Mar 7, 2024
CVE-2022-3204 A vulnerability named 'Non-Responsive Delegation Attack' (NRDelegation Attack) has been discovered in various DNS… 7.5 High Sep 26, 2022
CVE-2022-30699 NLnet Labs Unbound, up to and including version 1.16.1, is vulnerable to a novel type of the "ghost domain names" attack Not rated Aug 1, 2022
CVE-2022-30698 NLnet Labs Unbound, up to and including version 1.16.1 is vulnerable to a novel type of the "ghost domain names" attack Not rated Aug 1, 2022
CVE-2020-28935 NLnet Labs Unbound, up to and including version 1.12.0, and NLnet Labs NSD, up to and including version 4.3.3, contain a… Not rated Dec 7, 2020
CVE-2017-15105 A flaw was found in the way unbound before 1.6.8 validated wildcard-synthesized NSEC records Not rated Jan 23, 2018

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