CVE-2026-101341 (GCVE-0-2026-101341)

Vulnerability from cvelistv5 – Published: 2026-10-14 10:56 – Updated: 2026-10-14 14:08
VLAI
Title
Stack overwrite from specially formatted TXT-DATA RDATA field
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 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).
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 14:08 UTC
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
NLnet Labs CNA
CNA scorecard B 82/100 over 61 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
NLnet Labs NSD Affected: 4.10.0 , < 4.15.3 (semver)
guessed Create a notification for this product.
Date Public
2026-10-14 12:00
Credits
Alwaleed Ashi (LXR) <waleed.9998@hotmail.com>
Show details on NVD website
To clipboard 

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