CVE-2026-12490

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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://www.nlnetlabs.nl/downloads/nsd/CVE-2026-12490.txt	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:nlnetlabs:nsd:*:*:*:*:*:*:*:*

History

25 Oct 2026, 23:10

Type	Values Removed	Values Added
Summary		(es) Cuando se da un provide-xfr con un tls-auth-name, un secundario que solicita una transferencia debería proporcionar un certificado de cliente con ese nombre. Sin embargo, no se necesita ningún certificado de cliente cuando la solicitud llega a través de TLS a través del puerto TLS regular (y no el puerto tls-auth) o a través de TCP a través del puerto regular, cuando las otras condiciones de la regla provide-xfr coinciden.

Information

Published : 2026-06-25 07:16

Updated : 2026-10-25 23:10

NVD link : CVE-2026-12490

Mitre link : CVE-2026-12490

CVE.ORG link : CVE-2026-12490

JSON object : View

Products Affected

nlnetlabs

nsd

CWE

CWE-284

Improper Access Control

CWE-306

Missing Authentication for Critical Function

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