Nlnet Labs Nsd
9 CVEs affecting Nlnet Labs Nsd. Latest disclosed: 2026-08-26. Critical: 1, High: 7.
| CVE | Severity | Score | Published | Summary |
|---|---|---|---|---|
CVE-2026-18664 | Critical | 9.1 | 2026-08-26 | When ranges are used for access control (i.e. of the form 1.2.3.4-1.2.3.25), because NSD wrongly compares the IP address with the range on little endian system… |
CVE-2026-12244 | High | 8.8 | 2026-06-25 | If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB RR with… |
CVE-2026-12246 | High | 8.1 | 2026-06-25 | NSD version 4.14.0 introduced a bug where a specially crafted APL RR, with an adflength larger than permitted for the address family will overwrite the stack w… |
CVE-2026-19538 | High | 7.5 | 2026-08-26 | The BLOCKED access control list items that are evaluated to deny access on the the proxy protocol port can be bypassed completely when connecting over TCP or T… |
CVE-2026-19401 | High | 7.5 | 2026-08-26 | Any remote client can crash a (debugging/non-release build type) NSD serve child by sending it a special crafted message with a specially tuned number of DNS C… |
CVE-2026-18916 | High | 7.5 | 2026-08-26 | Any remote client can crash a NSD serve child, by throttling the TCP receive window after a TCP query. By continuously crashing the serve childs, the remote cl… |
CVE-2026-12490 | High | 7.5 | 2026-06-25 | When a provide-xfr is given with a tls-auth-name, a secondary requesting a transfer should provide a client certificate with that name. However, no client cert… |
CVE-2026-12245 | High | 7.5 | 2026-06-25 | NSD from version 4.13.0 has a heap use-after-free bug in logging errors on TLS connections, causing a crash of the server process, which can be triggered trivi… |
CVE-2020-28935 | Medium | 5.5 | 2020-12-07 | 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 local vulnerability that would allow f… |