What is CVE-2020-2732?

CVE-2020-2732 is a medium-severity vulnerability in Oracle Corporation Linux, classified under Information Disclosure. CVSS score: 5.8/10. Published 2020-04-08.

How severe is CVE-2020-2732?

Medium severity. CVSS v3 base score is 5.8 out of 10.

Is CVE-2020-2732 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Information disclosure in Oracle Corporation Linux

CVE-2020-2732

A flaw was discovered in the way that the KVM hypervisor handled instruction emulation for an L2 guest when nested virtualisation is enabled. Under some circumstances, an L2 guest may trick the L0 guest into accessing sensitive L1 resources that should be inaccessible to the L2 guest.

Vulnerability class: Information Disclosure

Published 2020-04-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.009 (59.0th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Oracle Corporation Linux — versions 7, 6
Red Hat Enterprise Linux — versions 7.0, 8.0

Weakness classification (CWE)

CWE-200 — Information Disclosure

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

www.openwall.com/lists/oss-security/2020/02/25/3 (Mailing List, Third Party Advisory)
www.spinics.net/lists/kvm/msg208259.html (Patch, Third Party Advisory)
git.kernel.org/linus/07721feee46b4b248402133228235318199b05ec (Patch, Third Party Advisory)
git.kernel.org/linus/35a571346a94fb93b5b3b6a599675ef3384bc75c (Patch, Third Party Advisory)
git.kernel.org/linus/e71237d3ff1abf9f3388337cfebf53b96df2020d (Patch, Third Party Advisory)
bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
linux.oracle.com/errata/ELSA-2020-5540.html (Third Party Advisory)
linux.oracle.com/errata/ELSA-2020-5542.html (Third Party Advisory)
linux.oracle.com/errata/ELSA-2020-5543.html (Third Party Advisory)
www.debian.org/security/2020/dsa-4667 (vendor-advisory)

Frequently asked questions

What is CVE-2020-2732?: CVE-2020-2732 is a medium-severity vulnerability in Oracle Corporation Linux, classified under Information Disclosure. CVSS score: 5.8/10. Published 2020-04-08.
How severe is CVE-2020-2732?: Medium severity. CVSS v3 base score is 5.8 out of 10.
Is CVE-2020-2732 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.