Risk Letters

Exploited vulnerability

CVE-2010-0806

TLP:CLEAR

Microsoft Internet Explorer Use-After-Free Vulnerability

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.

Facts

  • Vendor: Microsoft
  • Product: Internet Explorer
  • CVSS: 8.8
  • EPSS (probability of exploitation within 30 days): 82.2 %
  • On CISA's Known Exploited Vulnerabilities list since: 20 May 2026
  • First known exploitation: 20 May 2026
  • CISA's deadline for US federal agencies: 3 June 2026
  • Weakness: CWE-399
  • First seen by Risk Letters: 20 May 2026

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD