Ethical Hacking News
A critical vulnerability in FortiSIEM has been identified by Fortinet, with the exploit already being actively exploited in the wild. Cybersecurity professionals are advised to take immediate action and upgrade to a fixed release or follow recommended workarounds to prevent potential exploitation of this vulnerability. Stay informed about the latest vulnerabilities and exploits to protect yourself against emerging threats.
Fortinet has issued an advisory about a critical vulnerability in their SIEM system, FortiSIEM (CVE-2025-25256), with a CVSS score of 9.8. The exploit for this vulnerability is already present in the wild, allowing attackers to run arbitrary code via crafted CLI requests. The vulnerability impacts multiple versions of FortiSIEM, including 6.x and 7.x releases. Fortinet recommends limiting access to the phMonitor port (7900) and upgrading to a fixed release or above. Organizations using FortiSIEM are advised to take immediate action to prevent potential exploitation of this vulnerability.
In a recent advisory issued by Fortinet, cybersecurity experts have been alerted to a critical vulnerability in their popular security information and event management (SIEM) system, FortiSIEM. The vulnerability, tracked as CVE-2025-25256, has been deemed to be of high severity, with a CVSS score of 9.8, indicating a high risk of exploitation.
The exploit for this vulnerability exists in the wild, meaning that attackers have already begun exploiting it in their attacks. Fortinet warns its customers that this flaw allows unauthenticated attackers to run arbitrary code or commands via crafted CLI requests. The vulnerability is an OS command injection flaw that could potentially allow an attacker to execute unauthorized code or commands.
According to Fortinet, this vulnerability impacts the following versions of FortiSIEM:
* FortiSIEM 6.1, 6.2, 6.3, 6.4, 6.5, 6.6 (Migrate to a fixed release)
* FortiSIEM 6.7.0 through 6.7.9 (Upgrade to 6.7.10 or above)
* FortiSIEM 7.0.0 through 7.0.3 (Upgrade to 7.0.4 or above)
* FortiSIEM 7.1.0 through 7.1.7 (Upgrade to 7.1.8 or above)
* FortiSIEM 7.2.0 through 7.2.5 (Upgrade to 7.2.6 or above)
* FortiSIEM 7.3.0 through 7.3.1 (Upgrade to 7.3.2 or above)
However, it's worth noting that Fortinet has confirmed that FortiSIEM 7.4 is not affected by this flaw.
In light of this new information, Fortinet recommends several workarounds to mitigate the risk associated with this vulnerability. One recommended action is for customers to limit access to the phMonitor port (7900).
Fortinet emphasizes that it is essential for organizations using FortiSIEM to take immediate action and upgrade to a fixed release or follow the recommended workarounds to prevent potential exploitation of this vulnerability.
As cybersecurity professionals, it's essential that we are always on top of the latest vulnerabilities and take proactive steps to protect our systems. The discovery of this critical vulnerability in FortiSIEM serves as a timely reminder of the importance of staying vigilant and up-to-date with the latest security patches and best practices.
The exploitation of this vulnerability highlights the ongoing threat landscape and the need for robust cybersecurity measures to safeguard against emerging threats. As we continue to navigate the ever-evolving world of cybersecurity, it's crucial that we prioritize our defenses and stay informed about the latest vulnerabilities and exploits.
In conclusion, the critical FortiSIEM flaw under active exploitation is a wake-up call for cybersecurity professionals and organizations relying on this system. By taking immediate action and following Fortinet's recommendations, individuals can minimize their exposure to potential attacks and protect themselves against the ever-present threat of cybercrime.
Related Information:
https://www.ethicalhackingnews.com/articles/Critical-FortiSIEM-Flaw-Under-Active-Exploitation-A-Wake-Up-Call-for-Cybersecurity-Professionals-ehn.shtml
https://securityaffairs.com/181104/hacking/critical-fortisiem-flaw-under-active-exploitation-fortinet-warns.html
https://nvd.nist.gov/vuln/detail/CVE-2025-25256
https://www.cvedetails.com/cve/CVE-2025-25256/
Published: Wed Aug 13 14:05:02 2025 by llama3.2 3B Q4_K_M
