CVE-2023-32472

Arbitrary SMM code execution via stale size reuse

Published Jul 10, 2024 · Updated Sep 26, 2024

Out-of-bounds write in Dell PowerSwitch Z9664F-ON BIOS before 1.05.10 allows local users with high privileges to execute code in SMM. The SmbiosDmiEdit SMI handler reuses a DataSize value modified by one GetVariable call for the next call, overflowing a global buffer. Exploitation requires high-privilege local access and permits SMM control, including bypass of firmware protections and persistent BIOS modification.

CVSS severity5.7
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Out-of-bounds write in Dell PowerSwitch Z9664F-ON BIOS before 1.05.10 allows local users with high privileges to execute code in SMM. The SmbiosDmiEdit SMI handler reuses a DataSize value modified by one GetVariable call for the next call, overflowing a global buffer. Exploitation requires high-privilege local access and permits SMM control, including bypass of firmware protections and persistent BIOS modification.

The record

CVE
CVE-2023-32472
Published
Jul 10, 2024
Updated
Sep 26, 2024
Vendor
Dell
Product
Dell PowerSwitch Z9664F-ON BIOS
Classifications
CWE-787, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jul 10, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 26, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <v1.05.10
  2. Affected versionversion=N/A <v1.05.10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Dell · Dell PowerSwitch Z9664F-ON BIOSversion=0 <v1.05.10; version=N/A <v1.05.10

Published CVSS scores

8.2NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
5.7DellCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L

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-787Out-of-bounds Write
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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo