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Vulnerability record · CVE-2018-6641 · published 28 February 2018

CVE-2018-6641: Wiris mathtype use after free vulnerability

Wiris · Mathtype

An Arbitrary Free (Remote Code Execution) issue was discovered in Design Science MathType 6.9c. Crafted input can overwrite a structure, leading to a function call with an invalid parameter, and a subsequent free of important data such as a function pointer or list pointer. This is fixed in 6.9d.

9.8 CVSS 3.1 Critical EPSS 5.6% · top 7.4% CWE-416 · Use after free
9.8CVSS 3.1 base score, v2 7.5
5.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

An Arbitrary Free (Remote Code Execution) issue was discovered in Design Science MathType 6.9c. Crafted input can overwrite a structure, leading to a function call with an invalid parameter, and a subsequent free of important data such as a function pointer or list pointer. This is fixed in 6.9d.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.dessci.com/en/dl/ ProductVendor Advisory
https://drive.google.com/open?id=1qrHKzDA1daHh0mM2T8FRybL8we-mHRW9 ExploitThird Party Advisory
http://www.dessci.com/en/dl/ ProductVendor Advisory
https://drive.google.com/open?id=1qrHKzDA1daHh0mM2T8FRybL8we-mHRW9 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-6641), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.