CVE DATABASE / CVE-2010-3962
CVE-2010-3962
Microsoft Internet Explorer Uninitialized Memory Corruption Vulnerability
Confirmed exploited in the wild. Added 2025-10-06.
Federal remediation due 2025-10-27.
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Summary
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.
CVSS 3.1 breakdown
| Base score | 8.1 (HIGH) |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Attack vector | NETWORK |
| Attack complexity | HIGH |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity | HIGH |
| Availability | HIGH |
Weakness type (CWE)
Affected products
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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
Data: NIST NVD + CISA KEV. NVD last modified 2026-04-22. Always verify against the vendor advisory before acting.