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Vulnerability record · CVE-2018-6639 · published 28 February 2018

CVE-2018-6639: Wiris mathtype out-of-bounds write vulnerability

Wiris · Mathtype

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.

9.8 CVSS 3.1 Critical EPSS 3.6% · top 10.9% CWE-787 · Out-of-bounds write
9.8CVSS 3.1 base score, v2 7.5
3.6%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 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.

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=175_n6KhbOUlu9l0ySw-8QYk0oQbAaoZV ExploitThird Party Advisory
http://www.dessci.com/en/dl/ ProductVendor Advisory
https://drive.google.com/open?id=175_n6KhbOUlu9l0ySw-8QYk0oQbAaoZV ExploitThird Party Advisory

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Related vulnerabilities

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

9.8CVE-2018-6638Wiris mathtype out-of-bounds write vulnerabilityA stack-based buffer overflow (Remote Code Execution) issue was discovered in Design Science MathType 6.9c. This occurs in a function call in which t…EPSS 3.9%9.8CVE-2018-6640Wiris mathtype out-of-bounds write vulnerabilityA Heap Overflow (Remote Code Execution) issue was discovered in Design Science MathType 6.9c. Crafted input can modify the next pointer of a linked l…EPSS 3.9%9.8CVE-2018-6641Wiris mathtype use after free vulnerabilityAn Arbitrary Free (Remote Code Execution) issue was discovered in Design Science MathType 6.9c. Crafted input can overwrite a structure, leading to a…EPSS 5.6%7.5CVE-2022-31372Wiris mathtype path traversal vulnerabilityWiris Mathtype v7.28.0 was discovered to contain a path traversal vulnerability in the resourceFile parameter. This vulnerability is exploited via a …EPSS 1.3%8.8CVE-2026-53266Linux kernel ebtables SNAT out-of-bounds write in ARP rewriteThe ebtables SNAT target rewrites the ARP sender hardware address via skb_store_bits() without first making that range writable. When the ARP SHA byt…KEVEPSS 0.65%analysed8.8CVE-2026-87491Google Chrome V8 out-of-bounds write enables sandbox code executionChrome before 153.0.8010.36 contains an out-of-bounds write in the V8 JavaScript engine. A crafted HTML page can trigger the memory corruption, and b…KEVEPSS 3.1%analysed9.8CVE-2025-25249Fortinet FortiOS and FortiSwitchManager heap buffer overflow via crafted packetsA heap-based buffer overflow (CWE-122/CWE-787) in Fortinet FortiOS 6.4 through 7.6.3 and FortiSwitchManager 7.0 through 7.2.6 lets an unauthenticated…KEVEPSS 3.9%analysed7.8CVE-2026-53362Linux kernel IPv6 UDP paged allocation out-of-bounds write__ip6_append_data() in the Linux kernel mis-accounts fraggap on the paged-allocation path, leaving the linear skb area undersized while pagedlen is o…KEVEPSS 0.71%analysed

Source: NIST National Vulnerability Database (record CVE-2018-6639), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.