CVE-2008-4343: Chilkat Software Chilkat XML Activex Control

High severity, CVSS 9.3. EPSS: 8.7% chance of exploitation in the next 30 days.

The Chilkat XML ChilkatUtil.CkData.1 ActiveX control (ChilkatUtil.dll) 3.0.3.0 and earlier allows remote attackers to create, overwrite, and modify arbitrary files for execution via a call to the (1) SaveToFile, (2) SaveToTempFile, or (3) AppendBinary method. NOTE: this issue might only be exploitable in limited environments or non-default browser settings. NOTE: this can be leveraged for remote code execution by accessing files using hcp:// URLs.

Affected products

• Chilkat Software Chilkat XML Activex Control: up to and including 3.0.3.0

Published 2008-09-30. Last modified 2026-06-16.