Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since May 20, 2026.
CVE-2010-0249
Microsoft Internet Explorer Use-After-Free Vulnerability
Added to KEV May 20, 2026
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2010-0249
- CWE
- CWE-416
- Affected products
- Internet Explorer · Microsoft Internet Explorer · Microsoft
What happened
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.
What it means for your business
Microsoft Internet Explorer is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2010-0249). 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. CISA remediation due date: 2026-06-03. If you need help checking exposure, call (864) 335-9223.
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.
CISA due date: June 3, 2026
Sources
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