Descripción
BeyondTrust Remote Support contiene una vulnerabilidad de omisión de autenticación mediante suplantación (spoofing) que podría permitir a un atacante remoto realizar operaciones con archivos en el equipo (appliance).
Acción recomendada
Aplicar las mitigaciones del fabricante y revisar los equipos afectados en busca de señales de compromiso (triaje forense) antes de darlos por remediados. Evaluar la exposición a internet de cada activo para priorizar la aplicación de parches. En servicios en la nube, seguir las recomendaciones de seguridad del proveedor; si no hay mitigaciones disponibles, discontinuar el uso del producto.
Referencia de CISA para agencias federales de EE. UU.: BOD 26-04.
Referencias
- Aviso de beyondtrust.com beyondtrust.com/trust-center/security-advisories/bt26-05
- BOD 26-04 cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updat…
- Requisitos de triaje forense cisa.gov/news-events/directives/bod-26-04-implementation-guidance-pri…
- Ficha en NVD (NIST) nvd.nist.gov/vuln/detail/CVE-2026-102764
Ver el texto original en inglés (CISA)
BeyondTrust Remote Support Authentication Bypass by Spoofing Vulnerability
BeyondTrust Remote Support contains an authentication bypass by spoofing vulnerability that could allow a remote attacker to perform file operations on the appliance.
Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Notes: https://www.beyondtrust.com/trust-center/security-advisories/bt26-05 ; ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-102764
Otras vulnerabilidades de BeyondTrust en el catálogo
- CVE-2026-1731 BeyondTrust Remote Support (RS) and Privileged Remote Access (PRA) OS Command Injection Vulnerability Alta 13-02-2026
- CVE-2024-12686 BeyondTrust Privileged Remote Access (PRA) and Remote Support (RS) OS Command Injection Vulnerability Alta 13-01-2025
- CVE-2024-12356 BeyondTrust Privileged Remote Access (PRA) and Remote Support (RS) Command Injection Vulnerability Alta 19-12-2024