Advantech WebAccess HMI Designer is a human-machine interface integrated development tool from Advantech, Taiwan, China. A resource management error vulnerability exists in versions prior to Advantech WebAccess HMI Designer 2.1.11.0, which is caused by a post-release reuse issue in the software. An attacker could exploit the vulnerability to disclose information and execute arbitrary code on the affected WebAccess/MHI Designer.