CVE-2011-0094Internet Explorer Vulnerability
Use-after-free vulnerability in Microsoft Internet Explorer 6 and 7 allows remote attackers to execute arbitrary code by accessing an object that (1) was not properly initialized or (2) is deleted, aka "Layouts Handling Memory Corruption Vulnerability."
Published Apr 13, 2011 · Updated Apr 28, 2026
Key Facts
Patch immediately- CVE-2011-0094 is a critical-severity vulnerability (CVSS 9.3 v2) affecting Internet Explorer (Microsoft).
- It is exploited in the wild, listed in Industry KEV feed since May 16, 2011. No public exploit code is known.
- EPSS estimates a 22% 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 v2
9.3
AV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS (30-day exploit likelihood)
22%
Higher than 97.6% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
47/100
Publication score, see How it works
Exploitation Verdict
KEV listed
May 16, 2011
33 days after publication
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
0
Proof-of-concept links
In-the-wild evidence
1
Reports of active use
Description
Use-after-free vulnerability in Microsoft Internet Explorer 6 and 7 allows remote attackers to execute arbitrary code by accessing an object that (1) was not properly initialized or (2) is deleted, aka "Layouts Handling Memory Corruption Vulnerability."
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | May 16, 2011 | n/a | Not reported |
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Internet ExplorerMicrosoft | 6, 7 | n/a |
Timeline
Publicly disclosed
Apr 13, 2011
Added to Industry KEV feed
May 16, 2011
Last updated
Apr 28, 2026
Weakness Type
- CWE-399
References
- exploitVulnCheck exploitation report
- other20110412 Microsoft Internet Explorer Use-After-Free Memory Corruption Vulnerability
- otherMS11-018
- otheroval:org.mitre.oval:def:12463
- other1025327
FAQ
Common Questions.
Use-after-free vulnerability in Microsoft Internet Explorer 6 and 7 allows remote attackers to execute arbitrary code by accessing an object that (1) was not properly initialized or (2) is deleted, aka "Layouts Handling Memory Corruption Vulnerability."
Affected: Internet Explorer (Microsoft) versions 6, 7. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since May 16, 2011.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
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-2011-0094 On Your Attack Surface?
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