CVE-2010-0249VulnerabilityPublished 05/20/2026Updated 10/24/2026
CVE-2010-0249: Microsoft Internet Explorer Use-After-Free Vulnerability
Affects Microsoft Internet ExplorerSource CISA KEV
Severity
HighNo CVSS score published yet
- Exploitation
Actively exploited – in CISA KEV since 05/20/2026
- KEV deadline
- 06/03/2026
- EPSS
- 91.9% chance of exploitation in 30 days – higher than 99% of CVEs
What to do
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.
Description
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.