CVE-2022-32491

SMM arbitrary write via manipulated SMI

Published Oct 12, 2022 · Updated May 15, 2025

Buffer overflow in Dell Client Platform BIOS allows local authenticated users to cause an arbitrary write during SMM through a crafted SMI. Dell discloses that manipulating a system management interrupt triggers the overflow but does not identify the affected handler or unchecked buffer operation. Exploitation requires local administrative privileges and high complexity; the published impact is limited to confidentiality.

CVSS severity4.1
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Dell Client Platform BIOS allows local authenticated users to cause an arbitrary write during SMM through a crafted SMI. Dell discloses that manipulating a system management interrupt triggers the overflow but does not identify the affected handler or unchecked buffer operation. Exploitation requires local administrative privileges and high complexity; the published impact is limited to confidentiality.

The record

CVE
CVE-2022-32491
Published
Oct 12, 2022
Updated
May 15, 2025
Vendor
Dell
Product
Dell Client Platform BIOS
Classifications
CWE-119, CWE-120
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Oct 12, 2022CVE publishedPublication date reported by the CVE source.
  2. May 15, 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?

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

  1. Affected versionversion=unspecified <OptiPlex 7770 All-In-One BIOS (version: 1.14.0)

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Dell · Dell Client Platform BIOSversion=unspecified <OptiPlex 7770 All-In-One BIOS (version: 1.14.0)

Published CVSS scores

4.1DellCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
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 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-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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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