CVE-2009-1136

highpriority · attend · 69EPSS 0.620 · 99 %ileexploit · functionalEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

3 exploits · functional

Likely / severe?

62.0% (99th) EPSS

CVSS 9.3 · high

Is it mine?

7 products

Check your exposure

Who says so?

2 sources

enisa_euvd · nvd

EPSS · scored 2026-10-27

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."

cvss

Technical severity, 0–10. One row per scoring source.

9.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.09.3highAV:N/AC:M/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8.6 · impact 10

v2.09.3highAV:N/AC:M/Au:N/C:C/I:C/A:C/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-94USprimary

exploits (3)

Public proof-of-concept and weaponised exploit code.

EDB-16537Microsoft Office Web Components (OWC) Spreadsheet - msDataSourceObject Memory Corruption (MS09-043) (Metasploit)functional · exploit_db
EDB-9163Microsoft Office Web Components (OWC) Spreadsheet - ActiveX Buffer Overflow (PoC)functional · exploit_db
exploit/windows/browser/ms09_043_owc_msdsoMicrosoft OWC Spreadsheet msDataSourceObject Memory Corruptionfunctional · metasploit

affected products (7)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
microsoft isa server= 2004nvdUScpe:2.3:a:microsoft:isa_server:*:*:*:*:*:*:*:*
microsoft isa server= 2006nvdUScpe:2.3:a:microsoft:isa_server:*:*:*:*:*:*:*:*
microsoft office= 2003nvdUScpe:2.3:a:microsoft:office:*:*:*:*:*:*:*:*
microsoft office web components= 2003nvdUScpe:2.3:a:microsoft:office_web_components:*:*:*:*:*:*:*:*
microsoft office web components= xpnvdUScpe:2.3:a:microsoft:office_web_components:*:*:*:*:*:*:*:*
microsoft office xp= sp3nvdUScpe:2.3:a:microsoft:office_xp:*:*:*:*:*:*:*:*

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

enisa_euvd nvd NVD CVE.org MITRE

published 2009-07-15modified 2026-06-16

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+10437 more

references (18)

External citations — patches, advisories, analysis.

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