# CVE-2010-0249: Microsoft Internet Explorer Use-After-Free Vulnerability

> CVE-2010-0249: Microsoft Internet Explorer Use-After-Free Vulnerability. CVSS 8.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2010-0249
Last updated: 2026-06-16T23:15:47Z

- Published: 2010-01-15 17:00 UTC · Updated: 2026-06-16 23:15 UTC · Assigner: microsoft
- CVSS: 8.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS: 91.9%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2026-05-20, federal due date 2026-06-03, ransomware use: Unknown

## Description

Use-after-free vulnerability in Microsoft Internet Explorer 6, 6 SP1, 7, and 8 on Windows 2000 SP4; Windows XP SP2 and SP3; Windows Server 2003 SP2; Windows Vista Gold, SP1, and SP2; Windows Server 2008 Gold, SP2, and R2; and Windows 7 allows remote attackers to execute arbitrary code by accessing a pointer associated with a deleted object, related to incorrectly initialized memory and improper handling of objects in memory, as exploited in the wild in December 2009 and January 2010 during Operation Aurora, aka "HTML Object Memory Corruption Vulnerability."

## CISA 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.

## Affected vendors and products

- Microsoft: Internet Explorer

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2010-0249)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2010-0249)
- [http://blogs.technet.com/msrc/archive/2010/01/14/security-advisory-979352.aspx](http://blogs.technet.com/msrc/archive/2010/01/14/security-advisory-979352.aspx)
- [http://news.cnet.com/8301-27080\_3-10435232-245.html](http://news.cnet.com/8301-27080_3-10435232-245.html)
- [http://osvdb.org/61697](http://osvdb.org/61697)
- [https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-002](https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-002)
- [http://securitytracker.com/id?1023462](http://securitytracker.com/id?1023462)
- [https://exchange.xforce.ibmcloud.com/vulnerabilities/55642](https://exchange.xforce.ibmcloud.com/vulnerabilities/55642)
- [https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6835](https://oval.cisecurity.org/repository/search/definition/oval%253Aorg.mitre.oval%253Adef%253A6835)
- [http://support.microsoft.com/kb/979352](http://support.microsoft.com/kb/979352)
- [http://www.exploit-db.com/exploits/11167](http://www.exploit-db.com/exploits/11167)
- [http://www.kb.cert.org/vuls/id/492515](http://www.kb.cert.org/vuls/id/492515)
- [http://www.microsoft.com/technet/security/advisory/979352.mspx](http://www.microsoft.com/technet/security/advisory/979352.mspx)
- [http://www.securityfocus.com/bid/37815](http://www.securityfocus.com/bid/37815)
- [http://www.us-cert.gov/cas/techalerts/TA10-055A.html](http://www.us-cert.gov/cas/techalerts/TA10-055A.html)
- [http://www.vupen.com/english/advisories/2010/0135](http://www.vupen.com/english/advisories/2010/0135)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2010-0249 · Markdown: https://rewindex.com/cve/CVE-2010-0249.md · JSON: https://rewindex.com/api/v1/cves/CVE-2010-0249 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:47:11.436Z