CVE-2025-20047

Physical privilege escalation via improper CNVi locking

Published May 13, 2025 · Updated May 14, 2025

Improper locking in Intel Core Ultra Processors (Series 1) allows physically proximate attackers to escalate privileges through the CNVi interface. Intel has not disclosed which lock, shared state, or CNVi operation is mishandled. Physical access to an affected client platform is required; successful exploitation elevates privileges on that system.

CVSS severity5.3
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper locking in Intel Core Ultra Processors (Series 1) allows physically proximate attackers to escalate privileges through the CNVi interface. Intel has not disclosed which lock, shared state, or CNVi operation is mishandled. Physical access to an affected client platform is required; successful exploitation elevates privileges on that system.

The record

CVE
CVE-2025-20047
Published
May 13, 2025
Updated
May 14, 2025
Vendor
Topcon Positioning Systems, Inc.
Product
Intel Core Ultra Processors (Series 1)
Classifications
CWE-667
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 13, 2025CVE publishedPublication date reported by the CVE source.
  2. May 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=See references

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Topcon Positioning Systems, Inc. · Intel Core Ultra Processors (Series 1)version=See references

Published CVSS scores

5.7Intel CorporationCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
5.3Intel CorporationCVSS:4.0/AV:P/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-667Improper Locking

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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