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CVE-2011-1345

51
FAUCET Score

CVE-2011-1345 is a critical memory corruption vulnerability affecting Microsoft Internet Explorer versions 6, 7, and 8, specifically impacting Windows 7 users. This flaw allows remote attackers to execute arbitrary code by manipulating objects in memory that are either uninitialized or deleted. With a CVSS score of 9.3, this vulnerability is highly severe, requiring medium attack complexity but granting full confidentiality, integrity, and availability compromise. While there is no readily available exploit code in common frameworks like Metasploit or ExploitDB, it was famously demonstrated as part of a Pwn2Own chain, indicating its exploitability. Although not currently on the CISA KEV catalog, its high FAUCET Risk Score and mention in community discussions and media coverage, including a Krebs on Security article, highlight its historical significance and potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
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
40.88%
Probability of exploitation in next 30 days
EPSS Percentile
98.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.4088 is in the 97th percentile among its peer group of 8,915 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

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

dvlabs.tippingpoint.com / blog/2011/02/02/pwn2own-2011
docs.microsoft.com / en-us/security-updates/securitybulletins/2011/ms11-018
exchange.xforce.ibmcloud.com / vulnerabilities/66062
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12228
threatpost.com / en_us/blogs/pwn2own-winner-stephen-fewer-031011
twitter.com / aaronportnoy/statuses/45642180118855680
twitter.com / msftsecresponse/statuses/45646985998516224
computerworld.com / s/article/9214002/Safari_IE_hacked_first_at_Pwn2Own
securityfocus.com / bid/46821
securitytracker.com / id
us-cert.gov / cas/techalerts/TA11-102A.html
US Government Resource
zdnet.com / blog/security/pwn2own-2011-ie8-on-windows-7-hijacked-with-3-vulnerabilities/8367