Vulnerable component: Mt-phpincgi
CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C
CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')
The vulnerability allows a remote attacker to execute arbitrary PHP code on the target system.
The weakness exists due to improper validation of input when performing an unserialize() call. A remote attacker can send a specially crafted URL request, inject and execute arbitrary PHP code on the system.
Successful exploitation of the vulnerability results in arbitrary PHP code execution on the vulnerable system.
Note: the vulnerability was being actively exploited.