Nlnetlabs: >> Nsd >> 4.13.0 Security Vulnerabilities
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 trivially by sending a DNS query over a DoT connection, and closing the connection without reading the response.
CVSS Score
8.7
EPSS Score
0.003
Published
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 certificate is needed when the request comes in over TLS over the regular tls-port (and not the tls-auth-port) or over over TCP over the regular port, when the other conditions of the provide-xfr rule match.
CVSS Score
8.2
EPSS Score
0.001
Published
2026-06-25