CVE-2011-3400
CriticalPublic exploitMicrosoft Windows XP SP2 and SP3 and Server 2003 SP2 do not properly handle OLE objects in memory, which allows remote attackers to execute arbitrary code via a crafted object in a file, aka "OLE Property Vulnerability."
Published Dec 13, 2011 · Updated Apr 28, 2026
Key Facts
Patch immediately- CVE-2011-3400 is a critical-severity vulnerability (CVSS 9.3 v2) affecting Windows Server 2003 (Microsoft), Windows Xp (Microsoft).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 71% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v2
9.3
AV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS (30-day exploit likelihood)
71%
Higher than 99.4% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2011-3400 brief as a PDF
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Description
Microsoft Windows XP SP2 and SP3 and Server 2003 SP2 do not properly handle OLE objects in memory, which allows remote attackers to execute arbitrary code via a crafted object in a file, aka "OLE Property Vulnerability."
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Windows Server 2003Microsoft | See advisory | n/a |
| Windows XpMicrosoft | See advisory | n/a |
Timeline
Publicly disclosed
Dec 13, 2011
Last updated
Apr 28, 2026
Weakness Type
- CWE-94 Improper Control of Generation of Code ('Code Injection')
References
- exploitMSF ms11_093_ole32.rb
- exploitExploitDB-19002
- otherMS11-093
- otheroval:org.mitre.oval:def:14668
- otherTA11-347A
FAQ
Common Questions.
Microsoft Windows XP SP2 and SP3 and Server 2003 SP2 do not properly handle OLE objects in memory, which allows remote attackers to execute arbitrary code via a crafted object in a file, aka "OLE Property Vulnerability."
Affected: Windows Server 2003 (Microsoft); Windows Xp (Microsoft). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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