High severity · published Oct 27, 2026
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…
New
7.5
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EA
easyE4 · Eaton
before 2.46 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-41020
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-41020
www.eaton.com
https://www.eaton.com/content/dam/eaton/company/news-insights/cybersecurity/security-bulletins/eaton-va-2026-1017.pdf
More from easyE4
7.5
CVE-2026-41021
Eaton easyE4 uses an insufficiently strong password policy