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CVE-2011-1996

80
FAUCET Score

CVE-2011-1996 is a critical remote code execution vulnerability affecting Microsoft Internet Explorer versions 6 through 8, as well as various Windows operating systems. It stems from improper memory handling, allowing attackers to execute arbitrary code by exploiting a use-after-free condition related to option elements. With a CVSS score of 9.3, this vulnerability is highly severe, requiring no authentication and having a high impact on confidentiality, integrity, and availability. While not listed in CISA's KEV catalog, exploit modules are publicly available in Metasploit and ExploitDB, indicating a high potential for exploitation, despite a lack of broader community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
6CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_explorer:6:*:*:*:*:*:*:*
7CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_explorer:7:*:*:*:*:*:*:*
8CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_explorer:8:*:*:*:*:*:*:*

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
60.46%
Probability of exploitation in next 30 days
EPSS Percentile
99.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Metasploit: MS11-081 Microsoft Internet Explorer Option Element Use-After-Free · Oct 11, 2012
ExploitDB: EDB-24020 · Jan 10, 2013
This CVE's current EPSS score of 0.6046 is in the 99th percentile among its peer group of 8,914 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

Remediation records are not available for this CVE.

References

docs.microsoft.com / en-us/security-updates/securitybulletins/2011/ms11-081
PatchVendor Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12896
Third Party Advisory