← Vulnerability feed

Vulnerability record · CVE-2018-6638 · published 28 February 2018

CVE-2018-6638: Wiris mathtype out-of-bounds write vulnerability

Wiris · Mathtype

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.

9.8 CVSS 3.1 Critical EPSS 3.9% · top 10.0% CWE-787 · Out-of-bounds write
9.8CVSS 3.1 base score, v2 7.5
3.9%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

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.

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=1V-AA1InXBPhgJviabilttkaP4DYay9f6 ExploitThird Party Advisory
http://www.dessci.com/en/dl/ ProductVendor Advisory
https://drive.google.com/open?id=1V-AA1InXBPhgJviabilttkaP4DYay9f6 ExploitThird Party Advisory

Track CVE-2018-6638 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

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

9.8CVE-2018-6639Wiris mathtype out-of-bounds write vulnerabilityAn 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 fi…EPSS 3.6%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-2018-6638), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.