Use After Free in Microsoft Internet_explorer
CVE-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 refe…
Vulnerability class: Use-After-Free
EPSS: 0.969 (99.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Microsoft Internet_explorer — versions 6, 7, 8
- Microsoft Windows_7
- Microsoft Windows_server_2003
- Microsoft Windows_server_2008 — versions r2
- Microsoft Windows_vista
- Microsoft Windows_xp
- N/a — versions n/a
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
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.
Public proof-of-concept exploits
References
- secure@microsoft.com (VDB Entry, Third Party Advisory, vdb-entry, Broken Link, x_refsource_BID)
- secure@microsoft.com (US Government Resource, Third Party Advisory, x_refsource_CERT, third-party-advisory)
- secure@microsoft.com (x_refsource_MS, vendor-advisory, Patch, Vendor Advisory)
- secure@microsoft.com (US Government Resource, x_refsource_CERT-VN, Third Party Advisory, third-party-advisory)
- secure@microsoft.com (x_refsource_SECUNIA, Broken Link, Vendor Advisory, third-party-advisory)
- secure@microsoft.com (vdb-entry, Broken Link, x_refsource_VUPEN, Vendor Advisory)
- secure@microsoft.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
- secure@microsoft.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK, Broken Link)
- secure@microsoft.com (VDB Entry, Third Party Advisory, exploit, x_refsource_EXPLOIT-DB)
- secure@microsoft.com (x_refsource_MISC, Not Applicable)
Frequently asked questions
- What is CVE-2010-3962?
- CVE-2010-3962 is a high-severity vulnerability in Microsoft Internet_explorer, classified under Use After Free. CVSS score: 8.1/10. Published 2010-11-05.
- How severe is CVE-2010-3962?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2010-3962 known to be exploited?
- Yes. CVE-2010-3962 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-10-06), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.