Multiple stack-based buffer overflow vulnerabilities exist in widely used Advantech WebAccess/SCADA. The flaws are caused by insufficient validation of the length of untrusted user input. Successful exploitation allows an unauthenticated remote attacker to execute arbitrary code on the affected system.
Remediation
Apply the latest official security patch from Advantech for WebAccess/SCADA. Restrict public network access to affected SCADA systems to only trusted management IP ranges. Monitor for unauthorized activity on unpatched devices until updates are applied.
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