CVE-2025-31944

Privileged service interruption via hypervisor race condition

Published Feb 10, 2026 · Updated Feb 10, 2026

Race condition in Intel TDX Module before 1.5 allows local privileged hypervisor users to interrupt service through concurrent execution. Intel identifies the locus only as the Ring 0 hypervisor and has not disclosed the shared resource, synchronization error, or triggering operation. Exploitation requires high complexity and attack requirements; it disrupts module availability and has a bounded low downstream availability impact.

CVSS severity5.6
Medium
EPSS probability0.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in Intel TDX Module before 1.5 allows local privileged hypervisor users to interrupt service through concurrent execution. Intel identifies the locus only as the Ring 0 hypervisor and has not disclosed the shared resource, synchronization error, or triggering operation. Exploitation requires high complexity and attack requirements; it disrupts module availability and has a bounded low downstream availability impact.

The record

CVE
CVE-2025-31944
Published
Feb 10, 2026
Updated
Feb 10, 2026
Vendor
Topcon Positioning Systems, Inc.
Product
Intel TDX Module
Classifications
CWE-362, T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=before version tdx1.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Topcon Positioning Systems, Inc. · Intel TDX Moduleversion=before version tdx1.5

Published CVSS scores

5.6Intel CorporationCVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L
5.3Intel CorporationCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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