What is the CVSS score of CVE-2025-54756?

CVE-2025-54756 has a CVSS 3.1 base score of 8.4 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

How to fix or mitigate CVE-2025-54756?

Within 24 hours: Identify all BrightSign players in production and document their OS versions. Within 7 days: Isolate affected devices to segregated network segments, change default credentials to strong unique passwords, and disable remote management access where operationally feasible. Within 30 days: Upgrade all devices to patched versions (OS series 4 v8.5.53.1 or later, series 5 v9.0.166 or later) as patches become available, or evaluate replacement with supported hardware if upgrade paths are unavailable.

CVE-2025-54756

HIGH

Use of Default Credentials (CWE-1392)

2026-02-12 ics-cert@hq.dhs.gov

Information Disclosure

8.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.4 HIGH

AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:02 vuln.today

CVE Published

Feb 12, 2026 - 17:16 nvd

HIGH 8.4

DescriptionCVE.org

BrightSign players running BrightSign OS series 4 prior to v8.5.53.1 or series 5 prior to v9.0.166 use a default password that is guessable with knowledge of the device information. The latest release fixes this issue for new installations; users of old installations are encouraged to change all default passwords.

AnalysisAI

BrightSign players running BrightSign OS series 4 prior to v8.5.53.1 or series 5 prior to v9.0.166 use a default password that is guessable with knowledge of the device information. [CVSS 8.4 HIGH]