CVE-2025-20004

Local privilege escalation via control-flow mismanagement

Published May 13, 2025 · Updated Feb 26, 2026

Insufficient control flow management in Intel Xeon 6 E-Core firmware allows local users with privileged access to escalate privileges. Intel identifies the locus as the Alias Checking Trusted Module but has not disclosed the specific control-flow operation or input that is mishandled. Exploitation requires privileged local access and high complexity, affecting confidentiality and integrity without a reported availability impact.

CVSS severity8.5
High
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

Insufficient control flow management in Intel Xeon 6 E-Core firmware allows local users with privileged access to escalate privileges. Intel identifies the locus as the Alias Checking Trusted Module but has not disclosed the specific control-flow operation or input that is mishandled. Exploitation requires privileged local access and high complexity, affecting confidentiality and integrity without a reported availability impact.

The record

CVE
CVE-2025-20004
Published
May 13, 2025
Updated
Feb 26, 2026
Vendor
Topcon Positioning Systems, Inc.
Product
Intel Xeon 6 Processors
Classifications
CWE-691, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. May 13, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 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=See references

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Topcon Positioning Systems, Inc. · Intel Xeon 6 Processorsversion=See references

Published CVSS scores

8.5Intel CorporationCVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
7.2Intel CorporationCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-691Insufficient Control Flow Management
T1068Exploitation for Privilege Escalation

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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