What is CVE-2026-62427?

CVE-2026-62427 is a high-severity vulnerability in Xen, classified under Improper Access Control. CVSS score: 8.8/10. Published 2026-07-28.

How severe is CVE-2026-62427?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Xen

CVE-2026-62427

[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] To manage the system, sysctl and platform operations are used by the control domain or a possible Xenstore do…

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Xen — versions consult Xen advisory XSA-499

Weakness classification (CWE)

CWE-284 — Improper Access Control
CWE-305 — Authentication Bypass by Primary Weakness

References

security@xen.org

Frequently asked questions

What is CVE-2026-62427?: CVE-2026-62427 is a high-severity vulnerability in Xen, classified under Improper Access Control. CVSS score: 8.8/10. Published 2026-07-28.
How severe is CVE-2026-62427?: High severity. CVSS v3 base score is 8.8 out of 10.