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Fencer Vulns
critical 9.3

CVE-2009-1136 in the critical feed json

The Microsoft Office Web Components Spreadsheet ActiveX control (aka OWC10 or OWC11), as distributed in Office XP SP3 and Office 2003 SP3,…

published 2009-07-15 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-1137

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
62.0%
EPSS 62.0% chance of exploitation in 30 days, percentile 99.1%
public exploits
3
Metasploit, Exploit-DB

Summary

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."

Timeline

  1. First public exploit (Metasploit exploit/windows/browser/ms09_043_owc_msdso)
  2. Published

Exploit prediction

62.02% chance of exploitation in the next 30 days, higher than 99.1% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Metasploit exploit/windows/browser/ms09_043_owc_msdso Microsoft OWC Spreadsheet msDataSourceObject Memory Corruption metasploit exploit, normal rank, 2009-07-13
  • EDB-16537 Microsoft Office Web Components (OWC) Spreadsheet - msDataSourceObject Memory Corruption (MS09-043) (Metasploit) remote, 2010-07-20
  • EDB-9163 Microsoft Office Web Components (OWC) Spreadsheet - ActiveX Buffer Overflow (PoC) dos, 2009-07-16
  • xeye.us http://xeye.us/blog/2009/07/one-0day/ referenced PoC, tagged "exploit" by a source, unverified
  • trac.metasploit.com http://trac.metasploit.com/browser/framework3/trunk/modules/exploits/windows/browser/owc_spreadsheet_msdso.rb referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.