CVE-2025-6519
CRITICALCVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
2Description
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.
Analysis
E3 Site Supervisor (firmware version < 2.31F01) has a default admin user "ONEDAY" with a daily generated password. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Technical Context
This vulnerability is classified as Insufficiently Protected Credentials (CWE-522), which allows attackers to obtain user credentials due to weak protection mechanisms. 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. Affected products include: Copeland E3 Supervisory Controller Firmware.
Affected Products
Copeland E3 Supervisory Controller Firmware.
Remediation
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Hash passwords with strong algorithms (bcrypt, argon2), encrypt credentials in transit and at rest, never log credentials.
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External POC / Exploit Code
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