PT-2025-50508 · Brightsign · Brightsign Digital Signage Diagnostic Web Server

Published 2025-12-10 · Updated 2025-12-11 · CVE-2020-36884

Positive Technologies (AI Summary)

CVSS v4.0

6.9

Medium

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Name of the Vulnerable Software and Affected Versions BrightSign Digital Signage Diagnostic Web Server versions 8.2.26 and earlier

Description The software contains an unauthenticated server-side request forgery issue. This affects the 'url' GET parameter within the Download Speed Test service. An attacker can specify external domains, potentially bypassing firewalls and performing network enumeration. This is achieved by forcing the application to make arbitrary HTTP requests to internal network hosts. The vulnerable parameter is url.

Recommendations Versions prior to 8.2.26 should be updated.

Exploit

Fix

SSRF

Weakness Enumeration

CWE-918

Related Identifiers

CVE-2020-36884

Affected Products

Brightsign Digital Signage Diagnostic Web Server

References · 8

• 🔥 https://zeroscience.mk/en/vulnerabilities/ZSL-2020-5595.php · Exploit
• 🔥 https://exploit-db.com/exploits/48843 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-36884 · Security Note
• https://twitter.com/CVEnew/status/1999108942027514128 · Twitter Post
• https://vulncheck.com/advisories/brightsign-digital-signage-diagnostic-web-server-unauthenticated-ssrf · Note
• https://t.me/CVEtracker/39392 · Telegram Post
• https://github.com/zeroscience · Note
• https://brightsign.biz · Note