CVE-2019-6550

CVE-2019-6550 is a critical stack-based buffer overflow vulnerability affecting Advantech WebAccess/SCADA versions 8.3.5 and prior. This flaw, stemming from insufficient validation of user-supplied data length, allows for unauthenticated remote code execution. With a CVSS score of 9.8 (Critical), it poses a significant risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While no public exploit code or active exploitation has been confirmed, its high FAUCET Risk Score and limited community discussion suggest it remains a notable threat.