Authentication Bypass in Cisco Secure Firewall Management Center

CVE-2026-20079

What is CVE-2026-20079?

CVE-2026-20079 is a vulnerability identified in the web interface of Cisco Secure Firewall Management Center (FMC) Software, designed to provide centralized management for Cisco’s security devices. The vulnerability stems from an improper system process created at boot time, which could be exploited by an unauthenticated remote attacker. By sending specifically crafted HTTP requests to the affected device, an attacker could bypass authentication measures. This unauthorized access can enable them to execute scripts and commands, ultimately granting root access to the underlying operating system. Such a breach poses a high risk to organizations that rely on Cisco Secure Firewall Management Center for their network security, as it compromises the integrity of the security infrastructure.

Potential impact of CVE-2026-20079

1. Unauthorized Access and Control: The vulnerability allows attackers to gain root access, leading to full control over the affected system. This can enable them to manipulate settings, access sensitive information, or install malicious programs that could compromise the entire network.

2. Data Breaches: With root access, an attacker can extract confidential data, potentially leading to significant data breaches. This can result in financial losses, regulatory penalties, and harm to an organization’s reputation.

3. System Compromise and Malware Deployment: An exploited vulnerability may facilitate the deployment of ransomware or other types of malware, which can disrupt services and lead to extended downtime. The presence of malware could also pave the way for further attacks on interconnected systems within the organization.

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