CVEs / CVE-2010-3962
CVE-2010-3962: Microsoft Internet Explorer Uninitialized Memory Corruption Vulnerability
- Known exploited in the CISA KEV catalog since 6 Oct 2025
- high 9.3 CVSS 2.0 (NVD)
- EPSS 96.8% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
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.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| n/a n/a | n/a | — |
Exploitation
| In CISA KEV since | 6 Oct 2025 |
|---|---|
| Due date for US federal agencies | 27 Oct 2025 |
| Used in ransomware campaigns | Unknown |
| 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. |
Severity
| CVSS 2.0 | 9.3 highAV:N/AC:M/Au:N/C:C/I:C/A:CScored by NVD |
|---|---|
| Weakness | CWE-416 |
References
- CVE-2010-3962 on NVD
- CVE-2010-3962 in the CISA KEV catalog
- https://learn.microsoft.com/en-us/security-updates/SecurityAdvisories/2010/2458511?redirectedfrom=MSDN (cited by CISA)
- http://blogs.technet.com/b/msrc/archive/2010/11/02/microsoft-releases-security-advisory-2458511.aspx Vendor Advisory
- http://secunia.com/advisories/42091 Broken Link, Vendor Advisory
- http://www.exploit-db.com/exploits/15418 Third Party Advisory, VDB Entry
- http://www.exploit-db.com/exploits/15421 Third Party Advisory, VDB Entry
- http://www.kb.cert.org/vuls/id/899748 Third Party Advisory, US Government Resource
- http://www.microsoft.com/technet/security/advisory/2458511.mspx Patch, Vendor Advisory
- http://www.securityfocus.com/bid/44536 Broken Link, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id?1024676 Broken Link, Third Party Advisory, VDB Entry
- http://www.symantec.com/connect/blogs/new-ie-0-day-used-targeted-attacks Not Applicable
- http://www.us-cert.gov/cas/techalerts/TA10-348A.html Third Party Advisory, US Government Resource
- http://www.vupen.com/english/advisories/2010/2880 Broken Link, Vendor Advisory
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-090 Patch, Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/62962 Third Party Advisory, VDB Entry
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12279 Tool Signature
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2010-3962 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.