CVE-2010-3962
Use After Free
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
Official description from the CVE record, published by microsoft. Copyright © 1999-2026 The MITRE Corporation. See /security/cve/legal for the CVE license. View the record on cve.org
Key data
CVSS 3.1 High 8.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector: Network
The vulnerable component can be reached over a network, possibly from the Internet.
Attack complexity: High
The attack depends on conditions outside the attacker's control, so it takes preparation.
Privileges required: None
No account or privileges are needed.
User interaction: None
No action from any user is needed.
Scope: Unchanged
The impact stays within the vulnerable component.
Confidentiality impact: High
Serious or total effect on the secrecy of data.
Integrity impact: High
Serious or total effect on the trustworthiness of data.
Availability impact: High
Serious or total effect on availability.
| Metric | Value | What it means |
|---|---|---|
| Attack vector | Network | The vulnerable component can be reached over a network, possibly from the Internet. |
| Attack complexity | High | The attack depends on conditions outside the attacker's control, so it takes preparation. |
| Privileges required | None | No account or privileges are needed. |
| User interaction | None | No action from any user is needed. |
| Scope | Unchanged | The impact stays within the vulnerable component. |
| Confidentiality impact | High | Serious or total effect on the secrecy of data. |
| Integrity impact | High | Serious or total effect on the trustworthiness of data. |
| Availability impact | High | Serious or total effect on availability. |
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EPSS
- Score
- 0.96831 (96.8% probability)
- Percentile
- 99.9%
- Scores of
- Nov 10, 2026
- Model
- v2026.06.15
CISA Known Exploited Vulnerabilities
- Name in the catalog
- Microsoft Internet Explorer Uninitialized Memory Corruption Vulnerability
- Added to the catalog
- Oct 6, 2025
- Federal due date
- Oct 27, 2025
CISA assessment as of Oct 4, 2025
- Exploitation
- Recorded by CISA as active
- Automatable
- yes
- Technical impact
- total
Weakness (CWE)
- CWE-416Use After Free
References
- 44536 (securityfocus.com)vdb-entry
- TA10-348A (us-cert.gov)third-party-advisory
- MS10-090 (docs.microsoft.com)vendor-advisory
- VU#899748 (kb.cert.org)third-party-advisory
- 42091 (secunia.com)third-party-advisory
- ADV-2010-2880 (vupen.com)vdb-entry
- microsoft.com/technet/security/advisory/2458511.mspx
- 1024676 (securitytracker.com)vdb-entry
- 15421 (exploit-db.com)exploit
- symantec.com/connect/blogs/new-ie-0-day-used-targeted-attac…
- ms-ie-flag-code-execution(62962) (exchange.xforce.ibmcloud.com)vdb-entry
- blogs.technet.com/b/msrc/archive/2010/11/02/microsoft-relea…
- oval:org.mitre.oval:def:12279 (oval.cisecurity.org)vdb-entrysignature
- 15418 (exploit-db.com)exploit
Timeline
- ID reserved
- Record published
- Added to CISA KEV
- Record last updated
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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:15 UTC. Sources and licenses