CVE-2011-1347: n/a vulnerability

CVE-2011-1347: Unspecified vulnerability in Microsoft Internet Explorer 8 on Windows 7 allows remote attackers to bypass P...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 22:21 UTC (UTC+00:00)

Security readout for executives and security teams

This CVE describes a Microsoft Internet Explorer 8 issue on Windows 7 that could let an attacker escape Protected Mode constraints and create files. It was demonstrated as part of a three-vulnerability chain at Pwn2Own 2011. The public record lacks CVSS, CWE, and detailed affected-version data, so urgency depends on whether legacy IE8/Windows 7 remains in use. Exposure is likely limited to environments still running Internet Explorer 8 on Windows 7 or preserving similar legacy browser stacks. The bundle does not identify other affected versions or products, so do not expand scope beyond the stated platform without vendor evidence. Treat this as a legacy technology risk, not a broad modern-browser emergency. Prioritize finding and removing any remaining IE8 on Windows 7 exposure, especially systems that browse external sites or handle sensitive data. Mitigation focus: Check Microsoft MS11-057 guidance for applicable updates and remediation details.; Identify any remaining Internet Explorer 8 on Windows 7 usage.; Retire or isolate legacy browser systems where vendor-supported remediation is unavailable..

Prepared: Jun 24, 2026, 13:28 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Mar 10, 2011, 20:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
MS11-057CVE reference · vendor-advisory, x_refsource_MS
ms-ie-unspec-ce(66064)CVE reference · vdb-entry, x_refsource_XF
https://threatpost.com/en_us/blogs/pwn2own-winner-stephen-fewer-031011CVE reference · x_refsource_MISC

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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