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CVE-2009-1136

79
FAUCET Score

CVE-2009-1136 describes a critical arbitrary code execution vulnerability in the Microsoft Office Web Components Spreadsheet ActiveX control (OWC10/OWC11), affecting various Office and ISA Server products when used in Internet Explorer. This flaw, categorized as a CWE-94, allows remote attackers to execute arbitrary code via a crafted call to the msDataSourceObject method. With a CVSS score of 9.3 (AV:N/AC:M/Au:N/C:C/I:C/A:C), it represents a high-severity risk due to its network-based attack vector, medium complexity, and complete compromise potential. The vulnerability was actively exploited in the wild in July and August 2009, with public exploit code available, including a Metasploit module and Proof-of-Concept on ExploitDB, despite minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2004CPE matchmatch criteria
cpe:2.3:a:microsoft:isa_server:2004:sp3:enterprise:*:*:*:*:*
2004CPE matchmatch criteria
cpe:2.3:a:microsoft:isa_server:2004:sp3:standard:*:*:*:*:*
2006CPE matchmatch criteria
cpe:2.3:a:microsoft:isa_server:2006:*:*:*:*:*:*:*
2006CPE matchmatch criteria
cpe:2.3:a:microsoft:isa_server:2006:sp1:*:*:*:*:*:*
2006CPE matchmatch criteria
cpe:2.3:a:microsoft:isa_server:2006:supportability:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

AV:N/AC:M/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
62.02%
Probability of exploitation in next 30 days
EPSS Percentile
99.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
Metasploit: Microsoft OWC Spreadsheet msDataSourceObject Memory Corruption · Jul 13, 2009
ExploitDB: EDB-16537 · Jul 20, 2010
This CVE's current EPSS score of 0.6202 is in the 99th percentile among its peer group of 8,913 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

microsoftvendor investigatingvia nvd_reference
View patch

References

blogs.technet.com / msrc/archive/2009/07/13/microsoft-security-advisory-973472-released.aspx
blogs.technet.com / srd/archive/2009/07/13/more-information-about-the-office-web-components-activex-vulnerability.aspx
isc.sans.org / diary.html
docs.microsoft.com / en-us/security-updates/securitybulletins/2009/ms09-043
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5809
trac.metasploit.com / browser/framework3/trunk/modules/exploits/windows/browser/owc_spreadsheet_msdso.rb
Exploit
microsoft.com / technet/security/advisory/973472.mspx
Vendor Advisory
us-cert.gov / cas/techalerts/TA09-223A.html
US Government Resource
xeye.us / blog/2009/07/one-0day
Exploit