CVE-2014-4021

CVE-2014-4021 is a low-severity vulnerability in Xen with a CVSS 2.0 base score of 2.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Description

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.

Frequently asked questions

What is CVE-2014-4021?
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.
How severe is CVE-2014-4021?
CVE-2014-4021 has a CVSS 2.0 base score of 2.7, rated low severity.
Is CVE-2014-4021 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-4021?
CVE-2014-4021 primarily affects Xen. In total, 24 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-4021?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-4021 published?
CVE-2014-4021 was published on 2014-06-18 and last updated on 2026-06-17.

References

Affected products (24)

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