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TI-2018-04895 Aliases CVE-2018-6639GHSA-9wgj-6vhq-v8f5

An out-of-bounds write (Remote Code Execution) issue was discovered in Design Science…

Priority MEDIUM 48CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.03612 89th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:wiris:mathtype:6.9c:*:*:*:*:*:*:*6.9cVulnerableWiris
  • cpe:2.3:a:wiris:mathtype:6.9c:*:*:*:*:*:*:* Versions 6.9c Vulnerable ·Wiris

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-6639
  2. 2026-10-03 Alias added: GHSA-9wgj-6vhq-v8f5

References

Exploit 1

Advisory 1

  • TI-2018-04897 An Arbitrary Free (Remote Code Execution) issue was discovered in Design Science MathType… CVSS 3.1CRITICAL 9.8
  • TI-2018-04896 A Heap Overflow (Remote Code Execution) issue was discovered in Design Science MathType… CVSS 3.1CRITICAL 9.8
  • TI-2018-04894 A stack-based buffer overflow (Remote Code Execution) issue was discovered in Design… CVSS 3.1CRITICAL 9.8
  • TI-2022-13360 Wiris Mathtype v7.28.0 was discovered to contain a path traversal vulnerability in the… CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences