CVE-2011-1345
Microsoft Internet Explorer 6, 7, and 8 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that (1) was not properly initialized or (2) is deleted, as demonstrated by Stephen Fewer as the first of three chained vulnerabilities during a Pwn2Own competition at CanSecWest 2011, aka "Object Management Memory Corruption Vulnerability."
Key facts
- CVSS score
- 9.3 (v2.0)
- Severity
- HIGH
- CVSS vector
AV:N/AC:M/Au:N/C:C/I:C/A:C- EPSS score
- 40.9% (99th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2011-1352)
- Published
- March 10, 2011
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2011-1352 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- microsoft / internet explorer
- microsoft / windows 7
References
- http://dvlabs.tippingpoint.com/blog/2011/02/02/pwn2own-2011
- http://twitter.com/aaronportnoy/statuses/45642180118855680
- http://twitter.com/msftsecresponse/statuses/45646985998516224
- http://www.computerworld.com/s/article/9214002/Safari_IE_hacked_first_at_Pwn2Own
- http://www.securityfocus.com/bid/46821
- http://www.securitytracker.com/id?1025327
- http://www.us-cert.gov/cas/techalerts/TA11-102A.html(US Government Resource)
- http://www.zdnet.com/blog/security/pwn2own-2011-ie8-on-windows-7-hijacked-with-3-vulnerabilities/8367
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-018
- https://exchange.xforce.ibmcloud.com/vulnerabilities/66062
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12228
- https://threatpost.com/en_us/blogs/pwn2own-winner-stephen-fewer-031011
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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