High severity · published Aug 18, 2021
CVE-2020-25926
The DNS client in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Insufficient entropy in the DNS transaction id
7.5
CVSS
1.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 70% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NT
Nichestack Tcp/ip · Hcc-embedded
4.0.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-25926
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-25926
Mitigation
https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/
Third Party Advisory
https://www.kb.cert.org/vuls/id/608209
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