CVE-2020-25109

Published: Dec 11, 2020Modified: Jun 17, 2026

9.8

Vector

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

Exploitability: 3.9 / Impact: 5.9

Source: NVD

Description

An issue was discovered in the DNS implementation in Ethernut in Nut/OS 5.1. The number of DNS queries/responses (set in a DNS header) is not checked against the data present. This may lead to successful Denial-of-Service, and possibly Remote Code Execution.

Affected (1)

Products: Ethernut: Nut/os

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Ethernut Nut/os	Up to 5.1

Related CWEs

Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

References (4)

https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01

Source: cve@mitre.org

Third Party AdvisoryUS Government Resource

https://www.kb.cert.org/vuls/id/815128

Source: cve@mitre.org

Third Party AdvisoryUS Government Resource

https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party AdvisoryUS Government Resource

https://www.kb.cert.org/vuls/id/815128

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party AdvisoryUS Government Resource

Timeline

No history available yet.