CVE-2010-3962
HIGH severity · CVSS 8.1 · Use-after-free · actively exploited (CISA KEV)
8.1CVSS HIGH exploited
Actively exploited in the wild (CISA Known Exploited Vulnerabilities).
Added to KEV 2025-10-06. US federal agencies must patch by 2025-10-27.
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)97%
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
This vulnerability is being actively exploited in the wild — patch affected products urgently. Open any affected product above for its exact safe version.
Official patch: http://www.microsoft.com/technet/security/advisory/2458511.mspx ↗
Additional information
- NVD record
- http://www.microsoft.com/technet/security/advisory/2458511.mspxPatch
- http://blogs.technet.com/b/msrc/archive/2010/11/02/microsoft-releases-security-advisory-2458511.aspxAdvisory
- http://secunia.com/advisories/42091Advisory
- http://www.exploit-db.com/exploits/15418Advisory
- http://www.exploit-db.com/exploits/15421Advisory
- http://www.kb.cert.org/vuls/id/899748Advisory
- http://www.securityfocus.com/bid/44536Advisory
- http://www.securitytracker.com/id?1024676Advisory