PatchTheCVECVE-2025-52543: E3 Site Supervisor Control (firmware version < 2.31F01) application services (MGW and RCI) uses client side ha
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Routine
HIGH 7.5REMOTEUPGRADE
CVE-2025-52543 is a high-severity flaw (CVSS 7.5) affecting e3 supervisory controller firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
E3 Site Supervisor Control (firmware version < 2.31F01) application services (MGW and RCI) uses client side hashing for authentication. An attacker can authenticate by obtaining only the password hash.
Why this priority
- High severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.3% (top 78%) |
| CISA exploited list | No |
| Weakness | CWE-836 |
| Published | 2025-09-02 |
| Last modified | 2026-10-23 |
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
copeland e3 supervisory controller firmware UPGRADE
Affected: < 2.31f01
Fixed in: 2.31f01
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Related CVEs
- CVE-2025-52547 HIGH 7.5 UPGRADE E3 Site Supervisor Control (firmware version < 2.31F01) MGW contains an API call that lacks input validation
- CVE-2025-52546 MEDIUM 6.1 UPGRADE E3 Site Supervisor Control (firmware version < 2.31F01) has a floor plan feature that allows for an unauthenti
- CVE-2025-6519 CRITICAL 9.8 UPGRADE E3 Site Supervisor (firmware version < 2.31F01) has a default admin user "ONEDAY" with a daily generated passw
- CVE-2025-52544 HIGH 7.5 UPGRADE E3 Site Supervisor Control (firmware version < 2.31F01) has a floor plan feature that allows for an unauthenti
- CVE-2025-52545 HIGH 7.5 UPGRADE E3 Site Supervisor Control (firmware version < 2.31F01) RCI service contains an API call to read users info, w