A "memory calculation error" in Microsoft PowerPoint Viewer 2003 allows remote attackers to execute arbitrary code via a PowerPoint file with an invalid picture index that triggers memory corruption, aka "Memory Calculation Vulnerability."
Conclusion & alert: CVE-2008-0121 is rated High Risk (68.8/100): CVSS Critical severity, with high exploitation likelihood (EPSS 57.79%, 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 | 2025-11-20 | 60.48% | 57.79% | -2.70% |
| 2 | 2025-03-30 | 67.18% | 60.48% | -6.70% |
| 3 | 2025-03-29 | — | 67.18% | — |
Full EPSS history (16 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_powerpoint_viewer | 2003 | cpe:2.3:a:microsoft:office_powerpoint_viewer:2003:*:*:*:*:*:*:* |