The Microsoft Office Web Components Spreadsheet ActiveX control (aka OWC10 or OWC11), as distributed in Office XP SP3 and Office 2003 SP3, Office XP Web Components SP3, Office 2003 Web Components SP3, Office 2003 Web Components SP1 for the 2007 Microsoft Office System, Internet Security and Acceleration (ISA) Server 2004 SP3 and 2006 Gold and SP1, and Office Small Business Accounting 2006, when used in Internet Explorer, allows remote attackers to execute arbitrary code via a crafted call to the msDataSourceObject method, as exploited in the wild in July and August 2009, aka "Office Web Components HTML Script Vulnerability."
Conclusion & alert: CVE-2009-1136 is rated High Exploit Risk (81.9/100): CVSS Critical severity, with high exploitation likelihood (EPSS 62.02%, 99th percentile). Core evidence: 4 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| 16537 | exploit_db | edb | 2010-07-20 | Exploit-DB ↗ |
| 9163 | exploit_db | edb | 2009-07-16 | Exploit-DB ↗ |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 2026-06-15 | 86.08% | 62.02% | -24.06% |
| 2 | 2026-03-30 | 84.92% | 86.08% | +1.16% |
| 3 | 2026-01-31 | — | 84.92% | — |
Full EPSS history (26 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 | isa_server | 2004 | cpe:2.3:a:microsoft:isa_server:2004:sp3:enterprise:*:*:*:*:* |
| microsoft | isa_server | 2004 | cpe:2.3:a:microsoft:isa_server:2004:sp3:standard:*:*:*:*:* |
| microsoft | isa_server | 2006 | cpe:2.3:a:microsoft:isa_server:2006:*:*:*:*:*:*:* |
| microsoft | isa_server | 2006 | cpe:2.3:a:microsoft:isa_server:2006:sp1:*:*:*:*:*:* |
| microsoft | isa_server | 2006 | cpe:2.3:a:microsoft:isa_server:2006:supportability:*:*:*:*:*:* |
| microsoft | office | 2003 | cpe:2.3:a:microsoft:office:2003:*:small_business_accounting_2006:*:*:*:*:* |
| microsoft | office | 2003 | cpe:2.3:a:microsoft:office:2003:sp3:*:*:*:*:*:* |
| microsoft | office_web_components | 2003 | cpe:2.3:a:microsoft:office_web_components:2003:sp1:2007_microsoft_office:*:*:*:*:* |
| microsoft | office_web_components | 2003 | cpe:2.3:a:microsoft:office_web_components:2003:sp3:*:*:*:*:*:* |
| microsoft | office_web_components | xp | cpe:2.3:a:microsoft:office_web_components:xp:sp3:*:*:*:*:*:* |
| microsoft | office_xp | sp3 | cpe:2.3:a:microsoft:office_xp:sp3:*:*:*:*:*:*:* |