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Findings

CVE-2010-3962

Microsoft Internet Explorer Uninitialized Memory Corruption Vulnerability

Published Nov 5, 2010 · updated Jun 16, 2026 · Microsoft Internet Explorer

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.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 5, 2010 · Catalog

    Detected

    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.

  2. Oct 6, 2025 · CISA KEV

    Known exploited

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  3. Oct 27, 2025 · CISA KEV

    Remediation due

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  4. Jun 16, 2026 · Catalog

    Updated

    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.

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.

CISA due date Oct 27, 2025

Affected

  • cpe microsoft/internet explorer6
  • cpe microsoft/internet explorer7
  • cpe microsoft/internet explorer8
  • vendor Microsoft Internet Explorerversion unspecified

Sources

  • CISA KEVCVE-2010-3962

    Microsoft Internet Explorer contains an uninitialized memory corruption vulnerability that could allow for remote code execution. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.

    cisa.gov
  • CVE.orgCVE-2010-3962

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2010-3962

    30-day exploitation probability 96.8%

    first.org
  • Exploit Database15418

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Exploit Database15421

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Exploit Database16551

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Metasploit Modulesexploit_windows/browser/ms10_090_ie_css_clip

    Public module reference (good). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDCVE-2010-3962

    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 Cor

    nvd.nist.gov

References