CVE-2020-25926

HIGH

InterNiche NicheStack TCP/IP 4.0.1 - DNS Cache Poisoning

Title source: llm

Description

The DNS client in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Insufficient entropy in the DNS transaction id. The impact is: DNS cache poisoning (remote). The component is: dns_query_type(). The attack vector is: a specific DNS response packet.

References (2)

[Mitigation, Third Party Advisory] https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/

[Third Party Advisory, US Government Resource] https://www.kb.cert.org/vuls/id/608209

Scores

CVSS v3 7.5

EPSS 0.0029

EPSS Percentile 52.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Details

CWE

CWE-331

Status published

Products (1)

hcc-embedded/nichestack_tcp\/ip 4.0.1

Published Aug 18, 2021

Tracked Since Feb 18, 2026