CVE Watch16 de set. de 2026

CVE-2026-20079

Cisco Firewall Management Center Authentication Bypass Using an Alternate Path or Channel Vulnerability

CVSS

10.0

Crítica

EPSS

88.7%

p100

KEV

SIM

9 de set. de 2026

Exploit Today

0-100

Publicado: 4 de mar. de 2026 · Última mod.: 16 de set. de 2026 · CWE-288

EPSS · 30d

88.2%EPSS · 30 dias88.7%

2026-10-082026-11-05

Ficha do catálogo KEV

Produto

Cisco / Secure Firewall Management Center (FMC) and Security Cloud Control (SCC) Firewall Management

Vulnerabilidade

Cisco Firewall Management Center Authentication Bypass Using an Alternate Path or Channel Vulnerability

Adicionado ao KEV

9 de set. de 2026

Corrigir até

12 de set. de 2026

Uso conhecido em ransomware

Não

Descrição resumida

Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management contain an authentication Bypass using an alternate path or channel vulnerability that could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system.

Ação necessária

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-onprem-fmc-authbypass-5JPp45V2 ; 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-2026-20079

Descrição técnica

A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system.  This vulnerability is due to an improper system process that is created at boot time. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute a variety of scripts and commands that allow root access to the device. 

Referências oficiais

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