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HIGH · 7.5

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 N...

Vulnerability Description

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 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
NlnetlabsNsd>= 3.2.11, < 4.15.1

Related Weaknesses (CWE)

CWE-191

References

FAQ

What is CVE-2026-18916?

CVE-2026-18916 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 N...

How severe is CVE-2026-18916?

CVE-2026-18916 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-18916?

Check the references section above for vendor advisories and patch information. Affected products include: Nlnetlabs Nsd.