CVE-2022-28697

Privilege escalation via unprotected MEBx provisioning

Published Aug 18, 2022 · Updated May 5, 2025

Improper access control in Intel AMT and Intel Standard Manageability firmware allows physically proximate attackers to gain privileges. The boot-time MEBx configuration interface accepts AMT provisioning when BIOS password protection is absent. Physical platform access is required, and successful use grants management privileges without the end user's knowledge.

CVSS severity7.0
High
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Intel AMT and Intel Standard Manageability firmware allows physically proximate attackers to gain privileges. The boot-time MEBx configuration interface accepts AMT provisioning when BIOS password protection is absent. Physical platform access is required, and successful use grants management privileges without the end user's knowledge.

The record

CVE
CVE-2022-28697
Published
Aug 18, 2022
Updated
May 5, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1542.001
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 18, 2022CVE publishedPublication date reported by the CVE source.
  2. May 5, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8NVDCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.8CISA-ADPCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.0Intel CorporationCVSS:3.1/AV:P/AC:L/PR:N/UI:R/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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1542.001Pre-OS Boot: System Firmware

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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