Unspecified vulnerability in Microsoft Hyperlink Object Library (hlink.dll), possibly a buffer overflow, allows user-assisted attackers to execute arbitrary code via crafted hyperlinks that are not properly handled when hlink.dll "uses a file containing a malformed function," aka "Hyperlink Object Function Vulnerability."
Conclusion & alert: CVE-2006-3438 is rated High Risk (68.3/100): CVSS Critical severity, with high exploitation likelihood (EPSS 50.73%, 98th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. Mandatory action: High exploitation likelihood—assess exposure and prioritize 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 | 2026-05-07 | 53.93% | 50.73% | -3.20% |
| 2 | 2025-03-30 | 64.79% | 53.93% | -10.87% |
| 3 | 2025-03-29 | — | 64.79% | — |
Full EPSS history (12 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.3 | 2.0 | HIGH |
|
8.6 | 10.0 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| microsoft | hyperlink_object_library | — | cpe:2.3:a:microsoft:hyperlink_object_library:*:*:*:*:*:*:*:* |