CVE-2010-3962

Microsoft Internet Explorer Uninitialized Memory Corruption

8.1 HIGHActively exploited (CISA KEV)EPSS 96.8%

Published5 Nov 2010
Added to CISA KEV6 Oct 2025
Remediation due27 Oct 2025

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.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityHigh

Privileges requiredNone

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected products

Microsoft Internet Explorer6 · 7 · 8

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

Patch & vendor advisories

References

http://blogs.technet.com/b/msrc/archive/2010/11/02/microsoft-releases-security-advisory-2458511.aspxVendor Advisory
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-090PatchVendor Advisory
http://secunia.com/advisories/42091Broken LinkVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/62962Third Party AdvisoryVDB 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
http://www.exploit-db.com/exploits/15418Third Party AdvisoryVDB Entry
http://www.exploit-db.com/exploits/15421Third Party AdvisoryVDB Entry
http://www.kb.cert.org/vuls/id/899748Third Party AdvisoryUS Government Resource
http://www.microsoft.com/technet/security/advisory/2458511.mspxPatchVendor Advisory

and 5 more references

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2010-3962 being actively exploited?

Yes. CVE-2010-3962 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 6 Oct 2025.

How severe is CVE-2010-3962?

CVE-2010-3962 has a CVSS 3.1 base score of 8.1, rated high. EPSS estimates a 96.8% probability of exploitation.

Which products are affected by CVE-2010-3962?

Affected products include Microsoft Internet Explorer.

How do I fix CVE-2010-3962?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2010-3962 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.