CVE-2022-42276

Code execution via unrestricted SBIOS flash access

Published Jan 13, 2023 · Updated Apr 7, 2025

Improper access control in SBIOS SmiFlash on NVIDIA DGX A100 before 1.18 allows local users with elevated privileges to alter flash. The SmiFlash component permits an elevated local user to read, write, and erase SBIOS flash without the intended access restriction. Successful exploitation requires high local privileges and can execute code, disclose firmware data, interrupt service, or extend compromise to other components.

CVSS severity7.5
High
EPSS probability0.18%
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 SBIOS SmiFlash on NVIDIA DGX A100 before 1.18 allows local users with elevated privileges to alter flash. The SmiFlash component permits an elevated local user to read, write, and erase SBIOS flash without the intended access restriction. Successful exploitation requires high local privileges and can execute code, disclose firmware data, interrupt service, or extend compromise to other components.

The record

CVE
CVE-2022-42276
Published
Jan 13, 2023
Updated
Apr 7, 2025
Vendor
NVIDIA
Product
NVIDIA DGX Systems
Classifications
CWE-288, T1495
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jan 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 7, 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=All SBIOS firmware versions prior to 1.18

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

NVIDIA · NVIDIA DGX Systemsversion=All SBIOS firmware versions prior to 1.18

Published CVSS scores

7.5NVIDIACVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/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.

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-288Authentication Bypass Using an Alternate Path or Channel
T1495Firmware Corruption

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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