---
id: CVE-2026-101341
title: >-
  Tokens of text in RDATA (of for example TXT records) under 32 bytes are not
  checked to stay within the space reserved for the RDATA allowing for arbitrary
  sized out of bound stack writes, including an overwrite of a callback function
  poi…
summary: >-
  Tokens of text in RDATA (of for example TXT records) under 32 bytes are not
  checked to stay within the space reserved for the RDATA allowing for arbitrary
  sized out of bound stack writes, including an overwrite of a callback function
  poi…
severity: none
cwe:
  - CWE-121
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T11:16:57.423'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-101341'
references:
  - url: 'https://www.nlnetlabs.nl/downloads/nsd/CVE-2026-101341.txt'
    label: sep@nlnetlabs.nl
tags:
  - nvd
ingestedAt: '2026-10-14T11:27:22.141Z'
---

## Overview

Tokens of text in RDATA (of for example TXT records) under 32 bytes are not checked to stay within the space reserved for the RDATA allowing for arbitrary sized out of bound stack writes, including an overwrite of a callback function pointer which is called directly after parse.  Zone files which are written out by NSD itself, such for zones for which the NSD instance is secondary, will not be formatted like this. The zone file must be fed to NSD directly, (but it could come, for example, from an operator controlled provisioning system).

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.