CVE-2026-20316mediumbajo ataqueCWE-259

Cisco Secure Firewall Management Center Software Static Credential Vulnerability

43Vexday Risk Score

Prioriza la corrección. Ella está bajo explotación confirmada por CISA.

ssvc Attendcvss 5.3epss 0.8%

de la publicación al arma

Publicada en NVD29 jul

CISA KEV29 jul

probabilidad de explotación

0.8%top 47% de las CVE

explotación observada

síCISA + VulnCheck

Acción exigida por CISAplazo federal: 2026-08-01

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.

En resumen

El Cisco Secure Firewall Management Center posee una cuenta preconfigurada con contraseña fija que cualquiera puede usar para acceder remotamente sin autenticación. Un atacante puede explotar esta cuenta para acceder a información sensible del dispositivo afectado.

Detalle técnico

Una vulnerabilidad de credencial estática en la interfaz web de Cisco Secure Firewall Management Center permite acceso remoto no autenticado a través de una cuenta con privilegios bajos. La falla se explota mediante login directo con credenciales hardcoded; el impacto se amplía cuando se combina con otras vulnerabilidades del FMC para escalada de privilegios. La superficie de ataque se reduce si la interfaz de gestión carece de exposición a internet.

Resumen generado y traducido por IA a partir de la descripción oficial.

A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to log in to an affected device using a low-privileged account to access sensitive data within the impacted systems. This vulnerability is due to the presence of static user credentials for a low-privileged account. An attacker could exploit this vulnerability by using the account to log in to an affected system. A successful exploit could allow the attacker to log in to the affected system and access sensitive data as the low-privileged user.  Note: If the FMC management interface does not have public internet access, the attack surface that is associated with this vulnerability is reduced.   Cisco has assigned this security advisory a Security Impact Rating (SIR) of High rather than Medium as the score indicates. The reason is that this vulnerability can be used with other Cisco Secure FMC Software vulnerabilities to elevate privileges.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Productos afectados

Cisco · Cisco Secure Firewall Management Center (FMC)

Referencias

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-static-cred-BET3Cjh https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20316