CVE Watch16 sept 2026

CVE-2026-20316

Cisco Secure Firewall Management Center Use of Hard-coded Password Vulnerability

CVSS

5.3

Medio

EPSS

35.1%

p98

KEV

SÍ

29 jul 2026

Exploit Today

0-100

Publicado: 29 jul 2026 · Última mod.: 16 sept 2026 · CWE-259

EPSS · 30d

9.8%EPSS · 30 días35.1%

2026-09-012026-09-28

Ficha del catálogo KEV

Producto

Cisco / Secure Firewall Management Center (FMC)

Vulnerabilidad

Cisco Secure Firewall Management Center Use of Hard-coded Password Vulnerability

Añadido a KEV

29 jul 2026

Remediar antes de

1 ago 2026

Uso conocido en ransomware

Sí

Descripción resumida

Cisco Secure Firewall Management Center (FMC) formerly known as Firepower Management Center contains a use of hard-coded password vulnerability that 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.

Acción requerida

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.

Notas

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-static-cred-BET3Cjh ; 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-2026-20316

Descripción técnica

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.

Referencias oficiales

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