What is CVE-2026-62429?

CVE-2026-62429 is a medium-severity vulnerability in Xen, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 6.5/10. Published 2026-07-28.

How severe is CVE-2026-62429?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Xen

CVE-2026-62429

Accessing the vNUMA configuration data of a guest is still possible when domain destruction has already started. The cleaning up of that configuration information is not synchronized with its retrieval by a device model controlling the gu…

Vulnerability class: Race Condition

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Xen — versions consult Xen advisory XSA-502

Weakness classification (CWE)

CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)

References

security@xen.org
af854a3a-2127-422b-91ae-364da2661108
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2026-62429?: CVE-2026-62429 is a medium-severity vulnerability in Xen, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 6.5/10. Published 2026-07-28.
How severe is CVE-2026-62429?: Medium severity. CVSS v3 base score is 6.5 out of 10.