CVE-2018-6641
Description
An arbitrary free vulnerability in Design Science MathType 6.9c allows remote code execution via crafted input; fixed in 6.9d.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
An arbitrary free vulnerability in Design Science MathType 6.9c allows remote code execution via crafted input; fixed in 6.9d.
Vulnerability
An arbitrary free vulnerability exists in Design Science MathType version 6.9c. Crafted input can overwrite a structure, leading to a function call with an invalid parameter, and subsequently freeing important data such as a function pointer or list pointer. This issue is present in the 6.9c release and is fixed in 6.9d [1].
Exploitation
An attacker can exploit this vulnerability by providing specially crafted input to MathType. No authentication is required, and the attack can be performed remotely. The crafted input overwrites a structure, causing a function call with an invalid parameter, which then triggers a free operation on critical data, potentially leading to code execution.
Impact
Successful exploitation allows an attacker to achieve remote code execution with the privileges of the MathType process. This can lead to full compromise of the affected system, including data disclosure, modification, or denial of service.
Mitigation
The vulnerability is fixed in MathType version 6.9d, which is available for download from the vendor's website [1]. Users should upgrade to version 6.9d or later. No workarounds are documented. The CVE is not listed on the CISA Known Exploited Vulnerabilities (KEV) catalog.
AI Insight generated on May 26, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
1- Range: <= 6.9c
Patches
0No patches discovered yet.
Vulnerability mechanics
No source-code context for this CVE — mechanics is only generated when we can read the actual fix diff. Without that, the four sections (root cause, attack vector, affected code, fix) would be speculation rather than analysis.
References
2- www.dessci.com/en/dl/mitrex_refsource_MISC
- drive.google.com/openmitrex_refsource_MISC
News mentions
0No linked articles in our index yet.