CVE-2020-25109

CRITICAL 9.8CVE-2020-25109 · Published 11/12/2020 · updated 17/06/2026

In short

CVE-2020-25109 is a CRITICAL (CVSS 9.8) vulnerability.
Chance of exploitation in the next 30 days (EPSS): 53.7%, higher than 99.0% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
—	No affected product versions are listed for this vulnerability yet.

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.

References

us-cert.cisa.gov/ics/advisories/icsa-20-343-01 · Third Party Advisory
kb.cert.org/vuls/id/815128 · Third Party Advisory

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