CVE-2018-6638: Wiris Mathtype

Critical severity, CVSS 9.8. EPSS: 3.9% chance of exploitation in the next 30 days.

A stack-based buffer overflow (Remote Code Execution) issue was discovered in Design Science MathType 6.9c. This occurs in a function call in which the first argument is a corrupted offset value and the second argument is a stack buffer. This is fixed in 6.9d.

Affected products

• Wiris Mathtype: version 6.9c only

Published 2018-02-28. Last modified 2026-06-17.