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7.5

Microsoft Class Package Export Tool can run malicious code

CVE-2006-5395 · published 20 years ago
Summary

The Microsoft Class Package Export Tool (clspack.exe) can be tricked into running harmful programs if a specially crafted long text is provided. This could let an attacker take control of the system where the tool is used. Apply any available updates from Microsoft and limit who can run the tool.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
microsoft class_package_export_tool 5.0.2752
cpe:2.3:a:microsoft:class_package_export_tool:5.0.2752:*:*:*:*:*:*:*
Original advisory text
Buffer overflow in Microsoft Class Package Export Tool (aka clspack.exe) allows context-dependent attackers to execute arbitrary code via a long string. NOTE: the provenance of this information is...
Buffer overflow in Microsoft Class Package Export Tool (aka clspack.exe) allows context-dependent attackers to execute arbitrary code via a long string. NOTE: the provenance of this information is unknown; the details are obtained from third party information.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker partial control (estimated)
Severity
7.5 High
Exploitation
8% chance of attack within 30 days
Timeline
Published18 Oct 2006
Updated15 Oct 2026
First seen29 Sep 2026
Sources
CVE-2006-5395 · NVD
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