CVE-2010-3962

Name: CVE-2010-3962
Creator: NVD / NIST
Published: 2010-11-05T17:00:02.89+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10Actively ExploitedEPSS 96.89%

Last modified Jun 16, 2026

CVE-2010-3962 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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 has confirmed active exploitation in the wild. EPSS estimates a 96.89% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.1/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

96.89%

99.9th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Oct 27, 2025.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Microsoft	Internet Explorer	6
Microsoft	Internet Explorer	7
Microsoft	Internet Explorer	8

References

http://blogs.technet.com/b/msrc/archive/2010/11/02/microsoft-releases-security-advisory-2458511.aspxVendor Advisory
http://secunia.com/advisories/42091Broken Link, Vendor Advisory
http://www.exploit-db.com/exploits/15418Third Party Advisory, VDB Entry
http://www.exploit-db.com/exploits/15421Third Party Advisory, VDB Entry
http://www.kb.cert.org/vuls/id/899748Third Party Advisory, US Government Resource
http://www.microsoft.com/technet/security/advisory/2458511.mspxPatch, Vendor Advisory
http://www.securityfocus.com/bid/44536Broken Link, Third Party Advisory, VDB Entry
http://www.securitytracker.com/id?1024676Broken Link, Third Party Advisory, VDB Entry
http://www.symantec.com/connect/blogs/new-ie-0-day-used-targeted-attacksNot Applicable
http://www.us-cert.gov/cas/techalerts/TA10-348A.htmlThird Party Advisory, US Government Resource
http://www.vupen.com/english/advisories/2010/2880Broken Link, Vendor Advisory
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-090Patch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/62962Third Party Advisory, VDB Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12279Tool Signature
http://blogs.technet.com/b/msrc/archive/2010/11/02/microsoft-releases-security-advisory-2458511.aspxVendor Advisory
http://secunia.com/advisories/42091Broken Link, Vendor Advisory
http://www.exploit-db.com/exploits/15418Third Party Advisory, VDB Entry
http://www.exploit-db.com/exploits/15421Third Party Advisory, VDB Entry
http://www.kb.cert.org/vuls/id/899748Third Party Advisory, US Government Resource
http://www.microsoft.com/technet/security/advisory/2458511.mspxPatch, Vendor Advisory
http://www.securityfocus.com/bid/44536Broken Link, Third Party Advisory, VDB Entry
http://www.securitytracker.com/id?1024676Broken Link, Third Party Advisory, VDB Entry
http://www.symantec.com/connect/blogs/new-ie-0-day-used-targeted-attacksNot Applicable
http://www.us-cert.gov/cas/techalerts/TA10-348A.htmlThird Party Advisory, US Government Resource
http://www.vupen.com/english/advisories/2010/2880Broken Link, Vendor Advisory
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-090Patch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/62962Third Party Advisory, VDB Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12279Tool Signature
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2010-3962US Government Resource

Timeline

Published: Nov 5, 2010
Last Modified: Jun 16, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2010-3962?

How severe is CVE-2010-3962?

CVE-2010-3962 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 96.89% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2010-3962?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST