cve.bz

CVE-2021-3631

6.3 mediumEPSS 0.5%

Medium (6.3). EPSS 0.5% chance of exploitation in the next 30 days.

A flaw was found in libvirt while it generates SELinux MCS category pairs for VMs' dynamic labels. This flaw allows one exploited guest to access files labeled for another guest, resulting in the breaking out of sVirt confinement. The highest threat from this vulnerability is to confidentiality and integrity.

Severity

CVSS 3.1

6.3 medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
EPSS
0.5% chance of exploitation in the next 30 days; higher than 42% of CVEs (scores of 2026-10-31)
CWE
CWE-732
Published
Modified
Record from
the NVD, synced

Affected

References

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