CVE-2014-4021

CVE-2014-4021 is a none vulnerability published on June 18, 2014. Xen 3.2.x through 4.4.x does not properly clean memory pages recovered from guests, which allows local guest OS users to obtain sensitive information via unspecified vectors.

CVE-2014-4021 was first published in the National Vulnerability Database on June 18, 2014, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

CVE-2014-4021 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 46.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2014-4021, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.