A stack-based buffer overflow vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions, FortiOS

The impact of CVE-2025-58413 is significant due to the potential for remote code execution. An attacker who successfully exploits this vulnerability can gain complete control over the affected FortiOS device, including the ability to modify firewall rules, steal sensitive data, and pivot to other systems on the network. The ability to execute arbitrary commands allows for a wide range of malicious activities, including data exfiltration, denial-of-service attacks, and the installation of persistent backdoors. Given FortiOS's role as a critical network security component, a successful compromise could have a broad blast radius, impacting the entire organization. The vulnerability's nature, a buffer overflow, suggests a potential for denial-of-service conditions as well, further disrupting network operations.

1. 予約済み2025-09-01
2. 公開日2025-11-18
3. 更新日2026-02-26
4. EPSS 更新日2026-03-23

The primary mitigation for CVE-2025-58413 is to upgrade to a patched version of FortiOS as soon as possible. Fortinet has not yet released a fixed version as of the publication date. Until a patch is available, consider implementing temporary workarounds to reduce the attack surface. These may include restricting access to the vulnerable services, implementing strict input validation on network traffic, and deploying a Web Application Firewall (WAF) or reverse proxy to filter malicious packets. Monitor network traffic for suspicious patterns indicative of exploitation attempts. If a rollback to a previous, known-good version is possible, this can provide an immediate, albeit temporary, solution. After upgrading, verify the fix by attempting to reproduce the vulnerability using known attack vectors and confirming that the overflow is no longer triggered.