CVE-2022-42288Network attack vector

Username disclosure via IPMI timing oracle

Published Jan 13, 2023 · Updated Apr 7, 2025

Observable timing discrepancy in the NVIDIA DGX A100 BMC before 00.19.07 allows remote attackers to identify valid BMC usernames. The IPMI handler produces distinguishable oracle responses for candidate usernames instead of handling valid and invalid names uniformly. No authentication or user interaction is required, and the disclosed result is limited to username information rather than password or session access.

CVSS severity5.3
Medium
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Observable timing discrepancy in the NVIDIA DGX A100 BMC before 00.19.07 allows remote attackers to identify valid BMC usernames. The IPMI handler produces distinguishable oracle responses for candidate usernames instead of handling valid and invalid names uniformly. No authentication or user interaction is required, and the disclosed result is limited to username information rather than password or session access.

The record

CVE
CVE-2022-42288
Published
Jan 13, 2023
Updated
Apr 7, 2025
Vendor
NVIDIA
Product
NVIDIA DGX Systems
Classifications
CWE-208, CWE-203, T1087
Attack vector
network
Privileges
unauthenticated

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 BMC firmware versions prior to 00.19.07

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

NVIDIA · NVIDIA DGX Systemsversion=All BMC firmware versions prior to 00.19.07

Published CVSS scores

5.3NVIDIA CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-208Observable Timing Discrepancy
CWE-203Observable Discrepancy
T1087Account Discovery

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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