CVE-2020-36884

BrightSign Digital Signage Diagnostic Web Server 8.2.26 Unauthenticated SSRF

CVSS 6.9 MEDIUMEPSS 0.8%CWE-918

Vexday Risk Score

28Bajo

Decisión SSVC (CISA)

Attend

PoC disponible → seguir de cerca

CVSS 6.9EPSS 0.8%KEV nãoPoC —Nuclei simMetasploit —Patch —

Ciclo de vida

10 dic 2025Publicada en NVD

Recomendación: Planificar corrección próxima — ya existe PoC pública.

BrightSign Digital Signage Diagnostic Web Server 8.2.26 and less contains an unauthenticated server-side request forgery vulnerability in the 'url' GET parameter of the Download Speed Test service. Attackers can specify external domains to bypass firewalls and perform network enumeration by forcing the application to make arbitrary HTTP requests to internal network hosts.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L

Productos afectados

BrightSign, LLC · BrightSign Digital Signage Diagnostic Web Server

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Referencias

https://github.com/zeroscience https://www.brightsign.biz https://www.exploit-db.com/exploits/48843 https://www.vulncheck.com/advisories/brightsign-digital-signage-diagnostic-web-server-unauthenticated-ssrf https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5595.php