Authentication Bypass in Fortinet FortiAnalyzer and FortiManager Products

CVE-2026-24858

What is CVE-2026-24858?

CVE-2026-24858 is a serious vulnerability affecting Fortinet's FortiAnalyzer and FortiManager products, which are integral to network security management and analysis. These products are designed to provide organizations with insights into their network performance, security monitoring, and management capabilities. The vulnerability exists due to an authentication bypass issue, which allows attackers to exploit a specific flaw in how FortiCloud single sign-on (SSO) authentication is implemented. If successful, an attacker with access to a FortiCloud account and a registered device could log into devices managed by other accounts, leading to unauthorized access.

This flaw is particularly concerning because it compromises the integrity of device authentication, potentially allowing cybercriminals to manipulate system settings, access sensitive data, or reconfigure security parameters without permission. Given that these products are widely used in enterprise environments, the implications of this vulnerability could include significant disruptions in security operations and the potential for broader impacts on organization-wide security postures.

Potential impact of CVE-2026-24858

1. Unauthorized Access to Sensitive Data: Exploiting this vulnerability could give attackers access to sensitive information stored on devices that are accessible through compromised accounts, leading to data breaches and exposure of confidential information.

2. System Manipulation and Misconfiguration: Attackers could potentially alter settings on FortiAnalyzer and FortiManager products, undermining the intended security measures and configurations, which could exacerbate vulnerabilities and lead to further attacks on the network.

3. Reputational Damage and Financial Losses: Organizations that fall victim to exploitation of this vulnerability may experience reputational harm, loss of customer trust, and potentially significant financial costs associated with incident response, remediation efforts, and legal liabilities stemming from data breaches.

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