{"id":64170,"date":"2025-08-19T14:57:04","date_gmt":"2025-08-19T14:57:04","guid":{"rendered":""},"modified":"2025-10-10T11:20:35","modified_gmt":"2025-10-10T17:20:35","slug":"cve-2025-25256-a-critical-os-command-injection-vulnerability-in-fortinet-fortisiem","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-25256-a-critical-os-command-injection-vulnerability-in-fortinet-fortisiem\/","title":{"rendered":"CVE-2025-25256: A Critical OS Command Injection Vulnerability in Fortinet FortiSIEM<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

In the sphere of cybersecurity, a new vulnerability has surfaced that threatens the security of Fortinet FortiSIEM users. Identified as CVE-2025-25256, this vulnerability is due to an improper neutralization of special elements used in an OS command, generally known as ‘OS Command Injection’. This vulnerability has the potential<\/a> to affect a wide range of versions of the Fortinet FortiSIEM, making it an urgent issue that requires immediate attention. Essentially, this vulnerability could enable an unauthenticated<\/a> attacker to execute unauthorized code or commands, potentially leading to system compromise or data leakage.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-25256
\nSeverity: Critical (CVSS: 9.8)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: System compromise and potential data<\/a> leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

Fortinet FortiSIEM | 7.3.0 through 7.3.1
\nFortinet FortiSIEM | 7.2.0 through 7.2.5
\nFortinet FortiSIEM | 7.1.0 through 7.1.7
\nFortinet FortiSIEM | 7.0.0 through 7.0.3
\nFortinet FortiSIEM | Before 6.7.9<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The exploit takes advantage of the improper neutralization of special elements used in an OS command<\/a> in Fortinet FortiSIEM. An attacker can send a specially crafted CLI request<\/a> that includes malicious code. Because the system does not properly neutralize these special elements, the code is executed, giving the attacker the ability to execute unauthorized commands or code<\/a>. This execution could potentially result in system<\/a> compromise or leakage of sensitive data.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

Here’s a conceptual example of how the vulnerability might be exploited through a CLI request:<\/a><\/p>\n

$ ssh -l unprivileged_user target.example.com\npassword: \n<\/strong>\n\n<\/strong>\n\n$ echo [malicious_payload] | bash<\/code><\/pre>\n
In this conceptual example, the attacker uses SSH to connect to the target system. They then input the malicious payload into the bash shell. If the system is vulnerable<\/a> to CVE-2025-25256, it doesn’t properly neutralize the special elements in the command and executes the malicious payload.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview In the sphere of cybersecurity, a new vulnerability has surfaced that threatens the security of Fortinet FortiSIEM users. Identified as CVE-2025-25256, this vulnerability is due to an improper neutralization of special elements used in an OS command, generally known as ‘OS Command Injection’. This vulnerability has the potential to affect a wide range of […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[105],"product":[],"attack_vector":[78],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-64170","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-fortinet","attack_vector-injection"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t