CVE-2026-12246

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 when the zone is written to disk, with a maximum of 111 attacker controlled bytes.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.nlnetlabs.nl/downloads/nsd/CVE-2026-12246.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) La versión 4.14.0 de NSD introdujo un error donde un APL RR especialmente diseñado, con una longitud de adflength mayor de la permitida para la familia de direcciones, sobrescribirá la pila cuando la zona se escribe en el disco, con un máximo de 111 bytes controlados por el atacante.

Information

Published : 2026-06-25 07:16

Updated : 2026-10-25 23:10

NVD link : CVE-2026-12246

Mitre link : CVE-2026-12246

CVE.ORG link : CVE-2026-12246

JSON object : View

Products Affected

nlnetlabs

nsd

CWE

CWE-20

Improper Input Validation

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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