CVE-2010-3962

high

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.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/62962

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-090

http://www.us-cert.gov/cas/techalerts/TA10-348A.html

http://www.kb.cert.org/vuls/id/899748

http://www.exploit-db.com/exploits/15421

http://www.exploit-db.com/exploits/15418

https://securityaffairs.com/183049/security/u-s-cisa-adds-oracle-mozilla-microsoft-windows-linux-kernel-and-microsoft-ie-flaws-to-its-known-exploited-vulnerabilities-catalog.html

https://www.cisa.gov/news-events/alerts/2025/10/06/cisa-adds-seven-known-exploited-vulnerabilities-catalog

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2010-3962

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12279

http://www.vupen.com/english/advisories/2010/2880

http://www.symantec.com/connect/blogs/new-ie-0-day-used-targeted-attacks

http://www.securitytracker.com/id?1024676

http://www.securityfocus.com/bid/44536

http://www.microsoft.com/technet/security/advisory/2458511.mspx

http://secunia.com/advisories/42091

http://blogs.technet.com/b/msrc/archive/2010/11/02/microsoft-releases-security-advisory-2458511.aspx

Details

Source: Mitre, NVD

Published: 2010-11-05

Updated: 2026-06-16

Known Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 9.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.1

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

Severity: High

EPSS

EPSS: 0.96889