PT-2026-113784

CVE-2026-101337

Published

2026-10-14

Updated

2026-11-03

Description by

CVSS 4.0

8.7

High

MetricsAV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Name of the Vulnerable Software and Affected Versions NSD versions 4.10.0 through 4.15.2

Description An issue occurs when base64 data is split into pieces of 3 characters or less, causing tokens to be incorrectly calculated as 0 bytes. This allows an attacker to overwrite the stack with up to 64K of controlled data. This can happen when a zone file is fed directly to NSD, such as from an operator-controlled provisioning system. Approximately 116.3k instances are identified globally.

Recommendations Update NSD to a version later than 4.15.2.

Exploitability

Fix

Impacts

Researchers

Gaurang Maheta

Qifan Zhang

Vendors

Affected products

Weakness enumeration

CWE-121: Stack-based Buffer Overflow

Related identifiers