TippingPoint Zero Day Initiative

Mitsubishi Electric E-Designer Symbol xSize Out-Of-Bounds Write Remote Code Execution Vulnerability

ZDI-17-507: August 1st, 2017


CVSS Score

Affected Vendors

    Mitsubishi Electric

Affected Products


TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 24838. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Mitsubishi Electric E-Designer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the processing of Symbol sections of a mpa (project specification) file. An value for the xSize specification will cause initialization to write outside the bounds of a heap buffer. An attacker can leverage this vulnerability to execute arbitrary code in the context of the Administrator.

Vendor Response

Mitsubishi Electric has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2016-05-31 - Vulnerability reported to vendor
    2017-08-01 - Coordinated public release of advisory


This vulnerability was discovered by: