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CVE-2011-1347

41
FAUCET Score

CVE-2011-1347 describes an unspecified vulnerability in Microsoft Internet Explorer 8 running on Windows 7. This flaw allows remote attackers to bypass Protected Mode, enabling the creation of arbitrary files by leveraging a low-integrity process. With a CVSS score of 8.8, this vulnerability is critical, as it can be exploited remotely with medium complexity to achieve complete integrity and availability impact. While demonstrated during a Pwn2Own competition, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

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

8.8HIGH

AV:N/AC:M/Au:N/C:N/I:C/A:C

Confidentiality Impact
NONE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
9.2
CvssVersion
2.0

Exploit Intelligence

EPSS Score
27.97%
Probability of exploitation in next 30 days
EPSS Percentile
97.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.2797 is in the 92nd percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 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

dvlabs.tippingpoint.com / blog/2011/02/02/pwn2own-2011
docs.microsoft.com / en-us/security-updates/securitybulletins/2011/ms11-057
exchange.xforce.ibmcloud.com / vulnerabilities/66064
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
zdnet.com / blog/security/pwn2own-2011-ie8-on-windows-7-hijacked-with-3-vulnerabilities/8367