CVE-2011-1347

CVE-2011-1347 is a high-severity vulnerability in Microsoft Internet Explorer with a CVSS 2.0 base score of 8.8. Its EPSS exploit-prediction score of 28% places it in the 98th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

Unspecified vulnerability in Microsoft Internet Explorer 8 on Windows 7 allows remote attackers to bypass Protected Mode and create arbitrary files by leveraging access to a Low integrity process, as demonstrated by Stephen Fewer as the third of three chained vulnerabilities during a Pwn2Own competition at CanSecWest 2011.

Frequently asked questions

What is CVE-2011-1347?
Unspecified vulnerability in Microsoft Internet Explorer 8 on Windows 7 allows remote attackers to bypass Protected Mode and create arbitrary files by leveraging access to a Low integrity process, as demonstrated by Stephen Fewer as the third of three chained vulnerabilities during a Pwn2Own competition at CanSecWest 2011.
How severe is CVE-2011-1347?
CVE-2011-1347 has a CVSS 2.0 base score of 8.8, rated high severity.
Is CVE-2011-1347 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 28% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-1347?
CVE-2011-1347 affects Microsoft Internet Explorer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-1347?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2011-1347 published?
CVE-2011-1347 was published on 2011-03-10 and last updated on 2026-06-16.

References

Affected products (1)

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