A fundamental design flaw within the RADIUS protocol has been proven to be exploitable, compromising the integrity in the RADIUS Access-Request process. The attack allows a malicious user to modify packets in a way that would be indistinguishable to a RADIUS client or server. To be successful, the attacker must have the ability to inject themselves between the client and server.

An improper neutralization of special elements used in an OS Command ('OS Command Injection') vulnerability [CWE-78 ] in FortiManager 7.2.0 through 7.2.2, 7.0.0 through 7.0.7, 6.4.0 through 6.4.11, 6.2 all versions, 6.0 all versions, FortiAnalyzer 7.2.0 through 7.2.2, 7.0.0 through 7.0.7, 6.4.0 through 6.4.11, 6.2 all versions, 6.0 all versions and FortiADC  7.1.0, 7.0.0 through 7.0.3, 6.2 all versions, 6.1 all versions, 6.0 all versions management interface may allow an authenticated attacker with at least READ permissions on system settings to execute arbitrary commands on the underlying shell due to an unsafe usage of the wordexp function.

A buffer overflow [CWE-121] in the TFTP client library of FortiOS before 6.4.7 and FortiOS 7.0.0 through 7.0.2, may allow an authenticated local attacker to achieve arbitrary code execution via specially crafted command line arguments.

A buffer overflow [CWE-121] in the TFTP client library of FortiOS, may allow an authenticated local attacker to achieve arbitrary code execution via specially crafted command line arguments.

An improper neutralization of special elements used in an OS Command ('OS Command Injection') vulnerability [CWE-78 ] in FortiManager, FortiAnalyzer and FortiADC management interface may allow an authenticated attacker with at least READ permissions on system settings to execute arbitrary commands on the underlying shell due to an unsafe usage of the wordexp function.