In WebAccess, versions 8.4.1 and prior, an improper authorization vulnerability may allow an attacker to disclose sensitive information, cause improper control of generation of code, which may allow remote code execution or cause a system crash.

In WebAccess versions 8.4.1 and prior, multiple stack-based buffer overflow vulnerabilities are caused by a lack of proper validation of the length of user-supplied data. Exploitation of these vulnerabilities may allow remote code execution.

In WebAccess versions 8.4.1 and prior, multiple command injection vulnerabilities are caused by a lack of proper validation of user-supplied data and may allow arbitrary file deletion and remote code execution.

In WebAccess versions 8.4.1 and prior, an exploit executed over the network may cause improper control of generation of code, which may allow remote code execution, data exfiltration, or cause a system crash.

Stack-based buffer overflow in Advantech WebAccess/SCADA 8.4.1 allows a remote, unauthenticated attacker to execute arbitrary code via a crafted IOCTL 70603 RPC message.