CVE-2006-2058: Avantbrowser Avant Browser

Medium severity, CVSS 5.0. EPSS: 1.8% chance of exploitation in the next 30 days.

Argument injection vulnerability in Avant Browser 10.1 Build 17 allows user-assisted remote attackers to modify command line arguments to an invoked mail client via " (double quote) characters in a mailto: scheme handler, as demonstrated by launching Microsoft Outlook with an arbitrary filename as an attachment. NOTE: it is not clear whether this issue is implementation-specific or a problem in the Microsoft API.

Affected products

Published 2006-04-26. Last modified 2026-06-16.