Arbitrary file upload in Copeland E3 Supervisory Controller Firmware

CVE-2025-52546

E3 Site Supervisor Control (firmware version < 2.31F01) has a floor plan feature that allows for an unauthenticated attacker to upload floor plan files. By uploading a specially crafted floor plan file, an attacker can inject a stored XSS to the floorplan web page.

Vulnerability class: Unrestricted File Upload

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (9.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 9.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-52546: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-52546?
CVE-2025-52546 is a medium-severity vulnerability in Copeland E3 Supervisory Controller Firmware, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 6.1/10. Published 2025-09-02.
How severe is CVE-2025-52546?
Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2025-52546 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.