CVE-2026-18916

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 client can denial all TCP service to this NSD instance.

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 NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.nlnetlabs.nl/downloads/nsd/CVE-2026-18916.txt	Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-08-26 09:16

Updated : 2026-09-08 20:00

NVD link : CVE-2026-18916

Mitre link : CVE-2026-18916

CVE.ORG link : CVE-2026-18916

JSON object : View

Products Affected

nlnetlabs

nsd

CWE

CWE-191

Integer Underflow (Wrap or Wraparound)

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