How severe is CVE-2025-52549?

CVE-2025-52549 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-52549 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-52549?

CVE-2025-52549 affects Copeland E3 Supervisory Controller Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-52549?

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

Does CVE-2025-52549 have an EU (EUVD) identifier?

Yes. CVE-2025-52549 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26396.

When was CVE-2025-52549 published?

CVE-2025-52549 was published on 2025-09-02 and last updated on 2026-06-17.

CVE-2025-52549

CVE-2025-52549 is a critical-severity vulnerability in Copeland E3 Supervisory Controller Firmware with a CVSS 3.x base score of 9.8. 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-522.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.2
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-26396
Weakness: CWE-522
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) generates the root linux password on each boot. An attacker can generate the root linux password for a vulnerable device based on known or easy to fetch parameters.

Frequently asked questions

What is CVE-2025-52549?: E3 Site Supervisor Control (firmware version < 2.31F01) generates the root linux password on each boot. An attacker can generate the root linux password for a vulnerable device based on known or easy to fetch parameters.
How severe is CVE-2025-52549?: CVE-2025-52549 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-52549 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-52549?: CVE-2025-52549 affects Copeland E3 Supervisory Controller Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-52549?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-52549 have an EU (EUVD) identifier?: Yes. CVE-2025-52549 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26396.
When was CVE-2025-52549 published?: CVE-2025-52549 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-2025-52547 — 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-2025-52543 — High (CVSS 7.5): E3 Site Supervisor Control (firmware version < 2.31F01) application services (MGW and RCI) uses client side hashing for…
CVE-2025-52550 — High (CVSS 7.2): E3 Site Supervisor Control (firmware version < 2.31F01) firmware upgrade packages are unsigned. An attacker can forge…

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