CVE-2025-54756

BrightSign Players Use of Default Credentials

HIGH
8.4
CVSS Score
Published: February 12, 2026 at 04:34 PM UTC
Updated: June 17, 2026 at 09:40 AM UTC
2 products affected across 1 vendorBrightSign OS Series 5BrightSign OS Series 4

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Severity
HIGH8.4
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < v8.5.53.1
Affected range stops below v8.5.53.1, so it looks safe — our inference, not a vendor statement
v < v9.0.166
Affected range stops below v9.0.166, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.4HIGHicscert
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-1392

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