CVE-2025-23301

Local service interruption via unsafe debug access

Published Sep 4, 2025 · Updated Sep 4, 2025

VBIOS misconfiguration in NVIDIA HGX and DGX allows local users to interrupt service by setting an unsafe debug access level. The firmware assigns an unsafe debug access level to an internal asset, exposing it to an untrusted debug agent; NVIDIA has not disclosed the exact asset or state transition. Hopper HGX and DGX 1.7.1 and earlier and Blackwell HGX and DGX 1.2.0 and earlier are exposed only to local low-privileged users under high-complexity conditions, with no user interaction.

CVSS severity4.2
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

VBIOS misconfiguration in NVIDIA HGX and DGX allows local users to interrupt service by setting an unsafe debug access level. The firmware assigns an unsafe debug access level to an internal asset, exposing it to an untrusted debug agent; NVIDIA has not disclosed the exact asset or state transition. Hopper HGX and DGX 1.7.1 and earlier and Blackwell HGX and DGX 1.2.0 and earlier are exposed only to local low-privileged users under high-complexity conditions, with no user interaction.

The record

CVE
CVE-2025-23301
Published
Sep 4, 2025
Updated
Sep 4, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1244, CAPEC-114, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.2NVIDIACVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1244Internal Asset Exposed to Unsafe Debug Access Level or State
CAPEC-114Authentication Abuse
T1499Endpoint Denial of Service

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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