CVE-2024-28127

Local privilege escalation

Published Feb 12, 2025 · Updated Nov 3, 2025

Improper input validation in Intel Atom Processor X Series UEFI firmware allows local privileged users to escalate privileges. Intel identifies the affected firmware and CPU ID 90661 but has not disclosed the input, validation failure, or processing locus. The attack requires privileged local access; successful exploitation escalates privileges across a security boundary with no user interaction.

CVSS severity7.5
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Intel Atom Processor X Series UEFI firmware allows local privileged users to escalate privileges. Intel identifies the affected firmware and CPU ID 90661 but has not disclosed the input, validation failure, or processing locus. The attack requires privileged local access; successful exploitation escalates privileges across a security boundary with no user interaction.

The record

CVE
CVE-2024-28127
Published
Feb 12, 2025
Updated
Nov 3, 2025
Vendor
Topcon Positioning Systems, Inc.
Product
Intel Atom Processor X Series
Classifications
CWE-20, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 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 vectorlocal
Required privilegesadmin

What is affected?

Topcon Positioning Systems, Inc. · Intel Atom Processor X Seriesversion=See references

Published CVSS scores

7.5Intel CorporationCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
8.7Intel CorporationCVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA: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-20Improper Input Validation
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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