CVE-2010-3962

Use-after-free vulnerability in Microsoft Internet Explorer 6, 7, and 8 allows remote attackers to execute arbitrary code via vectors related to Cascading Style Sheets (CSS) token sequences and the clip attribute, aka an "invalid flag reference" issue or "Uninitialized Memory Corruption Vulnerability," as exploited in the wild in November 2010.

Score

CVSS 3.1 8.1 High

Status

Analyzed - secure@microsoft.com

Published

2010-11-05

Last modified

2025-10-22

Known exploited (CISA KEV)

since 2025-10-06, action due 2025-10-27: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Weaknesses

CWE-416

Affected products

• Internet Explorer (Microsoft)

References

• http://blogs.technet.com/b/msrc/archive/2010/11/02/microsoft-releases-security-advisory-2458511.aspx
• http://secunia.com/advisories/42091
• http://www.exploit-db.com/exploits/15418
• http://www.exploit-db.com/exploits/15421
• http://www.kb.cert.org/vuls/id/899748
• http://www.microsoft.com/technet/security/advisory/2458511.mspx
• http://www.securityfocus.com/bid/44536
• http://www.securitytracker.com/id?1024676
• http://www.symantec.com/connect/blogs/new-ie-0-day-used-targeted-attacks
• http://www.us-cert.gov/cas/techalerts/TA10-348A.html
• http://www.vupen.com/english/advisories/2010/2880
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-090
• https://exchange.xforce.ibmcloud.com/vulnerabilities/62962
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12279
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2010-3962