CVE-2017-12704: Advantech Webaccess

High severity, CVSS 8.8. EPSS: 2.6% chance of exploitation in the next 30 days.

A heap-based buffer overflow issue was discovered in Advantech WebAccess versions prior to V8.2_20170817. Researchers have identified multiple vulnerabilities where there is a lack of proper validation of the length of user-supplied data prior to copying it to the heap-based buffer, which could allow an attacker to execute arbitrary code under the context of the process.

Affected products

• Advantech Webaccess: up to and including 8.2

Published 2017-08-30. Last modified 2026-06-17.