Critical severity · published Sep 2, 2025
CVE-2025-6519
Consistent predictable generation of the password for the default admin user "ONEDAY" to the application services
9.8
CVSS
0.5%
EPSS
No
On KEV
Description
E3 Site Supervisor (firmware version < 2.31F01) has a default admin user "ONEDAY" with a daily generated password. An attacker can predictably generate the password for ONEDAY. The oneday user cannot be deleted or modified by any user.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ES
E3 Supervisory Control · Copeland LP
before 2.31F01 · source: vendor
ES
E3 Supervisory Controller Firmware · Copeland
before 2.31f01 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-6519
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-6519
Third Party Advisory
https://www.armis.com/research/frostbyte10/
More from E3 Supervisory Control
9.8
CVE-2025-52549
Predictable root linux password generation
7.5
CVE-2025-52547
DoS to the application services
7.5
CVE-2025-52545
Privilege escalation in the application services
7.5
CVE-2025-52544
Arbitrary read file from the filesystem
7.5
CVE-2025-52543
Login to the application services using only the password hash