CVE-2026-12490

EUVD-2026-39185
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 5.23%
Affected Products (NVD)
VendorProductVersion
nlnetlabsnsd
𝑥
< 4.14.3
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
nsd
bookworm
postponed
bullseye
4.3.5-1
fixed
forky
4.15.0-1
fixed
sid
4.15.0-1
fixed
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
nsd
bionic
not-affected
focal
not-affected
jammy
not-affected
noble
not-affected
questing
not-affected
resolute
Fixed 4.14.0-1ubuntu0.1~esm1
released
Common Weakness Enumeration
References
https://www.nlnetlabs.nl/downloads/nsd/CVE-2026-12490.txt