Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since May 20, 2026.
CVE-2010-0806
Microsoft Internet Explorer Use-After-Free Vulnerability
Added to KEV May 20, 2026
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2010-0806
- CWE
- CWE-399
- 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 via vectors involving access to an invalid pointer after the deletion of an 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-2010-0806). Microsoft Internet Explorer contains an use-after-free vulnerability that could allow remote attackers to execute arbitrary code via vectors involving access to an invalid pointer after the deletion of an 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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