Vulnerability Note VU#125868

Avast! antivirus buffer overflow vulnerability

Original Release date: 29 May 2007 | Last revised: 29 May 2007


Avast! antivirus contains a buffer overflow vulnerability. This vulnerability may allow an attacker to execute code a vulnerable system.


Avast! antivirus is an antivirus application that can scan different types of files. The Symbian Installer Format (SIS) file format is used by the Symbian OS to package files for distribution to mobile devices.

Avast! antivirus contains a buffer overflow vulnerability. By convincing a user to scan a specially crafted SIS file with a vulnerable version of Avast! antivirus, an attacker may be able to trigger the overflow.


A remote unauthenticated attacker may be able to execute arbitrary code, or create a denial-of-service condition.


Version 4.7.700 has been released to address this issue. Users are encouraged to update as soon as possible.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
Avast! Antivirus SoftwareAffected25 May 200729 May 2007
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A



Thanks to Sergio Alvarez of n.runs AG and Avast! for information that was used in this report.

This document was written by Ryan Giobbi.

Other Information

  • CVE IDs: Unknown
  • Date Public: 25 May 2007
  • Date First Published: 29 May 2007
  • Date Last Updated: 29 May 2007
  • Severity Metric: 1.15
  • Document Revision: 5


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