CVE-2018-3973: Canvasgfx Canvas Draw

High severity, CVSS 7.8. EPSS: 1.9% chance of exploitation in the next 30 days.

An exploitable out of bounds write exists in the CAL parsing functionality of Canvas Draw version 5.0.0. A specially crafted CAL image processed via the application can lead to an out of bounds write overwriting arbitrary data. An attacker can deliver a PCX image to trigger this vulnerability and gain code execution.

Affected products

• Canvasgfx Canvas Draw: version 5.0.0 only

Published 2019-02-06. Last modified 2026-06-17.