An improper neutralization of special elements used in an OS command ('OS Command Injection') vulnerability [CWE-78] in FortiWeb version 7.0.1 and below, 6.4 all versions, version 6.3.18 and below may allow a privileged attacker to execute arbitrary bash commands via crafted cli backup parameters.

Multiple improper neutralization of special elements used in an OS Command ('OS Command Injection') vulnerabilities [CWE-78] in FortiWeb version 7.0.1 and below, 6.4 all versions, version 6.3.19 and below may allow an authenticated attacker to execute unauthorized code or commands via crafted parameters of HTTP requests.

A stack-based buffer overflow vulnerability [CWE-121] in the CA sign functionality of FortiWeb version 7.0.1 and below, 6.4 all versions, version 6.3.19 and below may allow an authenticated attacker to achieve arbitrary code execution via specifically crafted password.

A stack-based buffer overflow vulnerability [CWE-121] in FortiWeb version 7.0.1 and earlier, 6.4 all versions, version 6.3.19 and earlier may allow a privileged attacker to execute arbitrary code or commands via specifically crafted CLI execute backup-local rename and execute backup-local show operations.

An improper neutralization of special elements used in an os command ('OS Command Injection') [CWE-78] in FortiWeb 7.0.0 through 7.0.1, 6.3.0 through 6.3.19, 6.4 all versions may allow an authenticated attacker to execute arbitrary shell code as root user via crafted HTTP requests.