Microsoft Internet Explorer Use-After-Free Vulnerability (CVE-2010-0806)
Severity: high · Patch status: patched · Since 2026-05-20 · 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 added CVE-2010-0806 to its Known Exploited Vulnerabilities catalog on May 20, 2026, which means attackers are exploiting it in the wild.
What to do
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- US federal agencies must remediate by Jun 3, 2026 (BOD 22-01); treat that as the outer limit.
Sources
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