7.5 High

Eaton easyE4 uses a static nonce during authentication, which could allow an unauthenticated attacker with access to captured…

CVE-2026-41020

Eaton easyE4 uses a static nonce during authentication, which could allow an unauthenticated attacker with access to captured authentication traffic to replay a valid authentication exchange and gain unauthorized access to the device.

Assessment

CVSS: 7.5 (v3.1)
Severity: High
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 27 October 2026
Last updated: 27 October 2026
Weakness: CWE-294
Assigner: CybersecurityCOE@eaton.com

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

At the source

References

https://www.eaton.com/content/dam/eaton/company/news-insights/cybersecurity/security-bulletins/eaton-va-2026-1017.pdf

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