CVE-2022-42285

Firmware tampering via mutable SPI flash lock

Published Jan 13, 2023 · Updated Apr 7, 2025

Improper lock-bit protection in NVIDIA DGX A100 SBIOS before 1.18 allows local users to disable SPI flash protection. The PEI phase fails to keep the trusted lock bit immutable after initialization, permitting protected SPI flash regions to be unlocked. Administrative access is required; successful exploitation permits firmware data tampering, privilege escalation, or service interruption.

CVSS severity7.8
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper lock-bit protection in NVIDIA DGX A100 SBIOS before 1.18 allows local users to disable SPI flash protection. The PEI phase fails to keep the trusted lock bit immutable after initialization, permitting protected SPI flash regions to be unlocked. Administrative access is required; successful exploitation permits firmware data tampering, privilege escalation, or service interruption.

The record

CVE
CVE-2022-42285
Published
Jan 13, 2023
Updated
Apr 7, 2025
Vendor
NVIDIA
Product
NVIDIA DGX Systems
Classifications
CWE-1231, 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

6.0NVIDIACVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1231Improper Prevention of Lock Bit Modification
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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