Microsoft Office Publisher 2007 SP1 does not properly calculate object handler data for Publisher files, which allows remote attackers to execute arbitrary code via a crafted file in a legacy format that triggers memory corruption, aka "Pointer Dereference Vulnerability."
Conclusion & alert: CVE-2009-0566 is rated High Risk (67.6/100): CVSS Critical severity, with high exploitation likelihood (EPSS 48.74%, 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 | 2026-01-31 | 52.51% | 48.74% | -3.77% |
| 2 | 2025-12-04 | 54.94% | 52.51% | -2.42% |
| 3 | 2025-05-11 | — | 54.94% | — |
Full EPSS history (31 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 | office_publisher | 2007 | cpe:2.3:a:microsoft:office_publisher:2007:sp1:*:*:*:*:*:* |