CVE-2022-34377

Service interruption via unverified SMM communication buffer

Published Feb 10, 2023 · Updated Mar 26, 2025

Improper SMM buffer verification in Dell PowerEdge BIOS allows local users with high privileges to interrupt system service. The BIOS does not properly verify an SMM communication buffer before processing it, but Dell does not identify the affected handler or validation error. Exploitation requires local high privileges and high complexity; Dell's availability-only assessment limits the supported impact to service interruption.

CVSS severity1.9
Low
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper SMM buffer verification in Dell PowerEdge BIOS allows local users with high privileges to interrupt system service. The BIOS does not properly verify an SMM communication buffer before processing it, but Dell does not identify the affected handler or validation error. Exploitation requires local high privileges and high complexity; Dell's availability-only assessment limits the supported impact to service interruption.

The record

CVE
CVE-2022-34377
Published
Feb 10, 2023
Updated
Mar 26, 2025
Vendor
Dell
Product
Dell PowerEdge
Classifications
CWE-119, T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 26, 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=BIOS 13G Intel 1S/2S and 14G AMD

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Dell · Dell PowerEdgeversion=BIOS 13G Intel 1S/2S and 14G AMD

Published CVSS scores

1.9DellCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/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 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-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1499.004Application or System Exploitation

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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