Description
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.
Published: 2026-07-28
Score: 7.5 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Workaround

Not enabling Viridian STIMERs for HVM guests will avoid the vulnerability. Note Viridian extensions are not enabled by default.

Tracking

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Advisories

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History

Tue, 28 Jul 2026 20:15:00 +0000

Type Values Removed Values Added
First Time appeared Xen
Xen xen
Vendors & Products Xen
Xen xen

Tue, 28 Jul 2026 16:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Viridian STIMER division by zero
Weaknesses CWE-369
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: XEN

Published:

Updated: 2026-07-28T16:33:31.447Z

Reserved: 2026-07-14T10:28:12.655Z

Link: CVE-2026-62431

cve-icon Vulnrichment

Updated: 2026-07-28T16:33:31.447Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-28T20:00:10Z

Weaknesses