Buffer overflow in MSO.DLL in Microsoft Office XP SP3 and Office 2004 for Mac allows remote attackers to execute arbitrary code via a crafted Office document, aka "MSO.DLL Buffer Overflow."
Conclusion & alert: CVE-2010-0243 is rated High Risk (66.3/100): CVSS Critical severity, with high exploitation likelihood (EPSS 43.40%, 97th 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 | 2025-10-29 | 62.23% | 43.40% | -18.84% |
| 2 | 2025-03-30 | 69.59% | 62.23% | -7.36% |
| 3 | 2025-03-29 | — | 69.59% | — |
Full EPSS history (24 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] |