How severe is CVE-2025-52543?

CVE-2025-52543 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2025-52543 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-52543?

CVE-2025-52543 affects Copeland E3 Supervisory Controller Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-52543?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-52543 have an EU (EUVD) identifier?

Yes. CVE-2025-52543 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26397.

When was CVE-2025-52543 published?

CVE-2025-52543 was published on 2025-09-02 and last updated on 2026-06-17.

CVE-2025-52543

CVE-2025-52543 is a high-severity vulnerability in Copeland E3 Supervisory Controller Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-836.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 5.3
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-26397
Weakness: CWE-836
Affected product: Copeland E3 Supervisory Controller Firmware
Published: 2025-09-02
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2025-52543?: 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.
How severe is CVE-2025-52543?: CVE-2025-52543 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2025-52543 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-52543?: CVE-2025-52543 affects Copeland E3 Supervisory Controller Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-52543?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-52543 have an EU (EUVD) identifier?: Yes. CVE-2025-52543 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26397.
When was CVE-2025-52543 published?: CVE-2025-52543 was published on 2025-09-02 and last updated on 2026-06-17.

References

https://www.armis.com/research/frostbyte10/

Affected products (1)

cpe:2.3:o:copeland:e3_supervisory_controller_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Copeland E3 Supervisory Controller Firmware

CVE-2025-6519 — Critical (CVSS 9.8): E3 Site Supervisor (firmware version < 2.31F01) has a default admin user "ONEDAY" with a daily generated password. An…
CVE-2025-52549 — Critical (CVSS 9.8): E3 Site Supervisor Control (firmware version < 2.31F01) generates the root linux password on each boot. An attacker can…
CVE-2025-52547 — High (CVSS 7.5): E3 Site Supervisor Control (firmware version < 2.31F01) MGW contains an API call that lacks input validation. An…
CVE-2025-52545 — High (CVSS 7.5): E3 Site Supervisor Control (firmware version < 2.31F01) RCI service contains an API call to read users info, which…
CVE-2025-52544 — High (CVSS 7.5): E3 Site Supervisor Control (firmware version < 2.31F01) has a floor plan feature that allows for an unauthenticated…
CVE-2025-52550 — High (CVSS 7.2): E3 Site Supervisor Control (firmware version < 2.31F01) firmware upgrade packages are unsigned. An attacker can forge…

All CVEs affecting Copeland E3 Supervisory Controller Firmware →

Other CWE-836 vulnerabilities

CVE-2023-34132 — Critical (CVSS 9.8): Use of password hash instead of password for authentication vulnerability in SonicWall GMS and Analytics allows…
CVE-2023-4299 — Critical (CVSS 9.0): Digi RealPort Protocol is vulnerable to a replay attack that may allow an attacker to bypass authentication to access…
CVE-2023-39546 — High (CVSS 8.8): CLUSTERPRO X Ver5.1 and earlier and EXPRESSCLUSTER X 5.1 and earlier, CLUSTERPRO X SingleServerSafe 5.1 and earlier,…
CVE-2026-9222 — High (CVSS 8.1): Setracker2 Android Companion App com.tgelec.setracker versions 3.1.5 and prior only require the password hash when…
CVE-2019-25552 — High (CVSS 7.5): CEWE PHOTO SHOW 6.4.3 contains a denial of service vulnerability that allows attackers to crash the application by…
CVE-2025-64471 — Medium (CVSS 4.9): A use of password hash instead of password for authentication vulnerability [CWE-836] vulnerability in Fortinet…

Browse all CWE-836 vulnerabilities →