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.
Conclusion & alert: CVE-2006-2058 is rated Moderate Risk (45.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.86%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-05-20 | 0.83% | 0.86% | +0.03% |
| 2 | 2025-03-30 | 0.86% | 0.83% | -0.04% |
| 3 | 2025-03-29 | — | 0.86% | — |
Full EPSS history (8 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2006-2058: no source package rows; 0 state rows across 0 repos (none); fixed 0, open 0. | https://security.alpinelinux.org/vuln/CVE-2006-2058 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| avantbrowser | avant_browser | 10.1 | cpe:2.3:a:avantbrowser:avant_browser:10.1:build_17:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://ingehenriksen.blogspot.com/2006/04/office-2003-file-attachment-exploit.html | Broken Link |
| http://securityreason.com/securityalert/785 | Broken Link |
| http://www.securityfocus.com/archive/1/432009/100/0/threaded | Broken Link Third Party Advisory VDB Entry |
| http://www.vupen.com/english/advisories/2006/1538 | Broken Link |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/26118 | Third Party Advisory VDB Entry |