Read the docs
TI-2020-15357 Aliases CVE-2020-25109GHSA-w9cm-mhh5-jvr7

An issue was discovered in the DNS implementation in Ethernut in Nut/OS 5.1.

Priority HIGH 74CWE-125Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.53699 99th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:ethernut:nut\/os:*:*:*:*:*:*:*:*up to 5.1VulnerableEthernut
  • cpe:2.3:o:ethernut:nut\/os:*:*:*:*:*:*:*:* Versions up to 5.1 Vulnerable ·Ethernut

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-25109
  2. 2026-10-03 Alias added: GHSA-w9cm-mhh5-jvr7
  3. 2026-11-05 EPSS moved to the 99th percentile and above

References

Advisory 2

  • TI-2020-15358 An issue was discovered in the DNS implementation in Ethernut in Nut/OS 5.1. CVSS 3.1CRITICAL 9.8
  • TI-2020-15356 An issue was discovered in the DNS implementation in Ethernut in Nut/OS 5.1. CVSS 3.1CRITICAL 9.8
  • TI-2020-15355 An issue was discovered in the DNS implementation in Ethernut in Nut/OS 5.1. CVSS 3.1CRITICAL 9.8
  • TI-2020-16541 An issue was discovered in Ethernut Nut/OS 5.1. CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences