What is CVE-2026-62431?

CVE-2026-62431 is a high-severity vulnerability in Xen, classified under Divide By Zero. CVSS score: 7.5/10. Published 2026-07-28.

How severe is CVE-2026-62431?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Xen

CVE-2026-62431

The logic to handle periodic Viridian STIMERs performs a division with an unchecked user-controlled divisor value, that can be set to zero to cause a #DE fault.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Xen — versions consult Xen advisory XSA-504

Weakness classification (CWE)

CWE-369 — Divide By Zero

References

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

Frequently asked questions

What is CVE-2026-62431?: CVE-2026-62431 is a high-severity vulnerability in Xen, classified under Divide By Zero. CVSS score: 7.5/10. Published 2026-07-28.
How severe is CVE-2026-62431?: High severity. CVSS v3 base score is 7.5 out of 10.