# CVE-2026-41020: CVE-2026-41020

Status: published. Published: 2026-10-27. Updated: 2026-11-04.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Eaton / easyE4: ≥ 0; < 2.46 (affected, custom). Source: CNA: Eaton

## Severity and prioritization

- CVSS 3.1: 7.5 (high); CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H; source: CNA: Eaton

- CISA KEV: No listing in collected sources

- EPSS: 0.23% as of 2026-11-04; percentile 13.46%

- SSVC: exploitation none; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-294

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.eaton.com/content/dam/eaton/company/news-insights/cybersecurity/security-bulletins/eaton-va-2026-1017.pdf (CNA: Eaton; vendor-advisory)

## Provenance

- CNA: Eaton: https://www.cve.org/CVERecord?id=CVE-2026-41020; retrieved 2026-11-04; source updated 2026-11-04

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-41020; retrieved 2026-11-04; source updated Not reported

Revision: d3436dbdcb7731706a023176f4c5ec88a9e7fed3163e877953fe6b5a61cd1ba6

Canonical: https://y2.dev/cve/CVE-2026-41020

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