CVE-2023-52712

SMRAM disclosure via exposed SMI handler

Published May 28, 2024 · Updated Aug 2, 2024

Improper access control in Huawei CurieM-WFG9B BIOS 2.28 allows local users to disclose SMRAM through the SMI handler interface. The exposed AmdPspP2CmboxV2 handler accepts SPI-flash interactions from common-permission callers, bypassing controls established by earlier UEFI phases. Local low-privilege access is required; exploitation leaks SMRAM, and the CNA reports that SMM memory corruption can lead to SMM code execution.

CVSS severity7.8
High
EPSS probability0.11%
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 Huawei CurieM-WFG9B BIOS 2.28 allows local users to disclose SMRAM through the SMI handler interface. The exposed AmdPspP2CmboxV2 handler accepts SPI-flash interactions from common-permission callers, bypassing controls established by earlier UEFI phases. Local low-privilege access is required; exploitation leaks SMRAM, and the CNA reports that SMM memory corruption can lead to SMM code execution.

The record

CVE
CVE-2023-52712
Published
May 28, 2024
Updated
Aug 2, 2024
Vendor
MindSpore
Product
CurieM-WFG9B BIOS
Classifications
CWE-284, T1542.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 28, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=OTA-CurieM-B-BIOS-2.28

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

MindSpore · CurieM-WFG9B BIOSversion=OTA-CurieM-B-BIOS-2.28

Published CVSS scores

7.8Huawei TechnologiesCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
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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