CVE-2011-0096Windows 7 XSS
The MHTML protocol handler in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly handle a MIME format in a request for content blocks in a document,…
Published Jan 31, 2011 · Updated Apr 28, 2026
Key Facts
Patch immediately- CVE-2011-0096 is a medium-severity vulnerability (CVSS 6.1 v3.1) affecting Windows 2003 Server (Microsoft), Windows 7 (Microsoft), Windows Server 2003 (Microsoft) and 3 more products.
- It is exploited in the wild, listed in Industry KEV feed since Apr 12, 2011. Public exploit code is available.
- EPSS estimates a 47% 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 listed as exploited in the wild.
Scores
CVSS v3.1
6.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS (30-day exploit likelihood)
47%
Higher than 98.8% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
42/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Apr 12, 2011
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
2
Proof-of-concept links
In-the-wild evidence
2
Reports of active use
Advisories And Exploit References
- advisory43093
- advisoryhttp://www.microsoft.com/technet/security/advisory/2501696.mspx
- advisoryADV-2011-0242
Description
The MHTML protocol handler in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly handle a MIME format in a request for content blocks in a document, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a crafted web site that is visited in Internet Explorer, aka "MHTML Mime-Formatted Request Vulnerability."
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Apr 12, 2011 | n/a | Not reported |
Affected Products
16 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 2003 ServerMicrosoft | See advisory | n/a |
| Windows 7Microsoft | See advisory | n/a |
| Windows Server 2003Microsoft | See advisory | n/a |
| Windows Server 2008Microsoft | r2 | n/a |
| Windows VistaMicrosoft | See advisory | n/a |
Timeline
Publicly disclosed
Jan 31, 2011
Added to Industry KEV feed
Apr 12, 2011
Last updated
Apr 28, 2026
Weakness Type
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
References
- advisory43093
- advisorymicrosoft.com · 2501696.mspx
- advisoryADV-2011-0242
- exploitVulnCheck exploitation report
- exploitExploitDB-16071
FAQ
Common Questions.
The MHTML protocol handler in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly handle a MIME format in a request for content blocks in a document, which allows remote attackers to conduct cr…
Affected: Windows 2003 Server (Microsoft); Windows 7 (Microsoft); Windows Server 2003 (Microsoft), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Apr 12, 2011.
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 listed as exploited in the wild.
Is CVE-2011-0096 On Your Attack Surface?
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