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IPA/ISEC:Vulnerabilities:Security Alert for Vulnerability in TeraPad

Published: Oct 21, 2010

Information-technology Promotion Agency (IPA, Chairman Kazumasa Fujie) announced a security alert on October 21, 2010, concerning security vulnerability in TeraPad.
This vulnerability allows an attacker to execute arbitrary code when a user opens a text file stored in a particular folder.

To fix this vulnerability, update to the fixed version supplied by the vendor.


TeraPad is a text editor. It is vulnerable to a flaw in the way it loads DLL (Dynamic-Link Libraries). If exploited, there is a possibility that arbitrary code may be executed on the computers installed with TeraPad.

To get a fixed version, go to the following URL: (Japanese)

For the latest information, refer to the following URL:

The IPA first received a report concerning this vulnerability through the creditee below and the JPCERT Coordination Center (JPCERT/CC), in line with the Information Security Early Warning Partnership, made adjustments to clarify the matter with the vendor, and made the announcement public on October 21, 2010.

Credit Makoto Shiotsuki (Reported: September 27, 2010)


Involuntary operations may occur, such as the execution of unintended programs, the deletion of files, and the installation of malicious tools like viruses and bots when a user is guided to a shared folder, for example, on a file server and opens a text file there.

Security Alert for Vulnerability in TeraPad


To fix this vulnerability, update to the fixed version provided by the vendor.

4.CVSS Severity

(1)Evaluation Result

Severity Rating
(CVSS base score)
□ Low
CVSS base score  

(2) Base Score Metrics

AV:Access Vector □ Local □ Adjacent
■ Network
AC:Access Complexity □ High ■ Medium □ Low
Au:Authentication □ Multiple □ Single ■ None
C:Confidentiality Impact □ None ■ Partial □ Complete
I:Integrity Impact □ None ■ Partial □ Complete
A:Availability Impact □ None ■ Partial □ Complete

■:Selected Values

5.CWE Type

This vulnerability has been CWE classified as "No Mapping (CWE-Other)".


IT Security Center,
Information-technology Promotion Agency, Japan (ISEC/IPA)