CVE-2018-6639: Wiris Mathtype

Critical severity, CVSS 9.8. EPSS: 3.6% chance of exploitation in the next 30 days.

An out-of-bounds write (Remote Code Execution) issue was discovered in Design Science MathType 6.9c. A size used by memmove is read from the input file. This is fixed in 6.9d.

Affected products

• Wiris Mathtype: version 6.9c only

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