CVE-2010-3962

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Summary

CVECVE-2010-3962
StatePUBLISHED
Assignermicrosoft
Source PriorityCVE Program / NVD first with legacy fallback
Published2010-11-05 17:00:02 UTC
Updated2026-04-22 10:35:19 UTC
DescriptionUse-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.

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from ADP

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

EPSS: 0.968890000 probability, percentile 0.998830000 (date 2026-07-21)

CISA KEV: Listed on 2025-10-06; due 2025-10-27; ransomware use Unknown

Problem Types: CWE-416 | n/a | CWE-416 CWE-416 Use After Free

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary9.3AV:N/AC:M/Au:N/C:C/I:C/A:C

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:M/Au:N/C:C/I:C/A:C

CISA Known Exploited Vulnerability

VendorMicrosoft
ProductInternet Explorer
NameMicrosoft Internet Explorer Uninitialized Memory Corruption Vulnerability
Required ActionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Noteshttps://learn.microsoft.com/en-us/security-updates/SecurityAdvisories/2010/2458511?redirectedfrom=MSDN ; https://nvd.nist.gov/vuln/detail/CVE-2010-3962

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Microsoft Internet Explorer 6 All All All
Application Microsoft Internet Explorer 7 All All All
Operating System Microsoft Windows Server 2003 - sp2 All All
Operating System Microsoft Windows Xp - sp2 All All
Operating System Microsoft Windows Xp - sp3 All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Microsoft Internet Explorer CSS Tags Uninitialized Memory Remote Code Execution Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Broken Link, Third Party Advisory, VDB Entry
Microsoft Security Advisory (2458511): Vulnerability in Internet Explorer Could Allow Remote Code Execution af854a3a-2127-422b-91ae-364da2661108 www.microsoft.com Patch, Vendor Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog 134c704f-9b21-4f2e-91b3-4a467353bcc0 www.cisa.gov US Government Resource
SecurityTracker.com Archives - Microsoft Internet Explorer Freed Object Invalid Flag Reference Access Lets Remote Users Execute Arbitrary Code af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Broken Link, Third Party Advisory, VDB Entry
New IE Zero-Day used in Targeted Attacks | Symantec Connect af854a3a-2127-422b-91ae-364da2661108 www.symantec.com Not Applicable
Internet Explorer Multiple Vulnerabilities - Advisories - Community af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link, Vendor Advisory
Webmail : Solution de messagerie professionnelle - OVHcloud- OVH af854a3a-2127-422b-91ae-364da2661108 www.vupen.com Broken Link, Vendor Advisory
Internet Explorer Memory Corruption 0day Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.exploit-db.com Third Party Advisory, VDB Entry
Microsoft Security Bulletin MS10-090 - Critical | Microsoft Docs af854a3a-2127-422b-91ae-364da2661108 docs.microsoft.com Patch, Vendor Advisory
Internet Explorer 6, 7, 8 Memory Corruption 0day Exploit af854a3a-2127-422b-91ae-364da2661108 www.exploit-db.com Third Party Advisory, VDB Entry
IBM X-Force Exchange af854a3a-2127-422b-91ae-364da2661108 exchange.xforce.ibmcloud.com Third Party Advisory, VDB Entry
US-CERT Vulnerability Note VU#899748 af854a3a-2127-422b-91ae-364da2661108 www.kb.cert.org Third Party Advisory, US Government Resource
US-CERT Technical Cyber Security Alert TA10-348A -- Microsoft Updates for Multiple Vulnerabilities af854a3a-2127-422b-91ae-364da2661108 www.us-cert.gov Third Party Advisory, US Government Resource
Repository / Oval Repository af854a3a-2127-422b-91ae-364da2661108 oval.cisecurity.org Tool Signature
Microsoft Releases Security Advisory 2458511 - The Microsoft Security Response Center (MSRC) - Site Home - TechNet Blogs af854a3a-2127-422b-91ae-364da2661108 blogs.technet.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev

Additional Advisory Data

SourceTimeEvent
ADP2025-10-06T00:00:00.000ZCVE-2010-3962 added to CISA KEV

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