CVE-2010-0249

What the flaw is

Microsoft Internet Explorer contains an use-after-free vulnerability that could allow remote attackers to execute arbitrary code by accessing a pointer associated with a deleted object. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.

Description as published by CISA. We have not independently reproduced it.

What CISA requires

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

This deadline is binding on US federal civilian agencies under BOD 22-01. It is not a legal deadline for anyone else, but it is a useful urgency signal — CISA sets it by how actively the flaw is being used, not by CVSS.

Public exploit code

5 public repositories referencing this CVE have been catalogued on GitHub. Treat this as a strong signal to prioritise patching, not as a verified working exploit — many such repositories are scanners, write-ups or forks rather than functional code.

• AlexielArdilla/Hard-Hatter-Hacking-Etico
• Jhoel777ar/Hard-Hatter-Hacking-Etico
• ahmedobied/python-exploits
• ankh2054/python-exploits
• tanjiti/sec_profile

Vendor advisories

• learn.microsoft.com/en-us/security-updates/SecurityAdvisories/2010/979352
• nvd.nist.gov/vuln/detail/CVE-2010-0249

Primary sources

• NVD entry — CVSS score, CPE list and references
• CISA KEV catalog — the source for this page
• CVE Record at cve.org