# CVE-2010-3962: Microsoft Internet Explorer Uninitialized Memory Corruption Vulnerability

> CVE-2010-3962: Microsoft Internet Explorer Uninitialized Memory Corruption Vulnerability. CVSS 8.1 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2010-3962
Last updated: 2025-10-22T00:05:51Z

- Published: 2010-11-05 16:28 UTC · Updated: 2025-10-22 00:05 UTC · Assigner: microsoft
- CVSS: 8.1 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS: 96.8%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2025-10-06, federal due date 2025-10-27, ransomware use: Unknown

## Description

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.

## CISA 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.

## Affected vendors and products

- Microsoft: Internet Explorer

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2010-3962)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2010-3962)
- [http://blogs.technet.com/b/msrc/archive/2010/11/02/microsoft-releases-security-advisory-2458511.aspx](http://blogs.technet.com/b/msrc/archive/2010/11/02/microsoft-releases-security-advisory-2458511.aspx)
- [https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-090](https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-090)
- [http://secunia.com/advisories/42091](http://secunia.com/advisories/42091)
- [https://exchange.xforce.ibmcloud.com/vulnerabilities/62962](https://exchange.xforce.ibmcloud.com/vulnerabilities/62962)
- [https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12279](https://oval.cisecurity.org/repository/search/definition/oval%253Aorg.mitre.oval%253Adef%253A12279)
- [http://www.exploit-db.com/exploits/15418](http://www.exploit-db.com/exploits/15418)
- [http://www.exploit-db.com/exploits/15421](http://www.exploit-db.com/exploits/15421)
- [http://www.kb.cert.org/vuls/id/899748](http://www.kb.cert.org/vuls/id/899748)
- [http://www.microsoft.com/technet/security/advisory/2458511.mspx](http://www.microsoft.com/technet/security/advisory/2458511.mspx)
- [http://www.securityfocus.com/bid/44536](http://www.securityfocus.com/bid/44536)
- [http://www.securitytracker.com/id?1024676](http://www.securitytracker.com/id?1024676)
- [http://www.symantec.com/connect/blogs/new-ie-0-day-used-targeted-attacks](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.us-cert.gov/cas/techalerts/TA10-348A.html)
- [http://www.vupen.com/english/advisories/2010/2880](http://www.vupen.com/english/advisories/2010/2880)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2010-3962 · Markdown: https://rewindex.com/cve/CVE-2010-3962.md · JSON: https://rewindex.com/api/v1/cves/CVE-2010-3962 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:46:25.621Z