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BrightSign Players

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1. EXECUTIVE SUMMARY

  • CVSS v4 8.5
  • ATTENTION: Exploitable remotely/low attack complexity
  • Vendor: BrightSign
  • Equipment: Brightsign Players
  • Vulnerabilities: Execution with Unnecessary Privileges

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow for privilege escalation on the device, easily guessed passwords, or for arbitrary code to be executed on the underlying operating system.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

Products using the following versions of BrightSign OS are affected:

  • BrightSign OS series 4 players: Versions prior to v8.5.53.1
  • BrightSign OS series 5 players: Versions prior to v9.0.166

3.2 VULNERABILITY OVERVIEW

3.2.1 EXECUTION WITH UNNECESSARY PRIVILEGES CWE-250

BrightSign players running BrightSign OS series 4 prior to v8.5.53.1 or series 5 prior to v9.0.166 contain an execution with unnecessary privileges vulnerability, allowing for privilege escalation on the device once code execution has been obtained.

CVE-2025-3925 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.8 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2025-3925. A base score of 8.5 has been calculated; the CVSS vector string is (CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

3.3 BACKGROUND

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