CVE-2023-25506

Code execution via preconditioned heap out-of-bounds access

Published Apr 22, 2023 · Updated Feb 4, 2025

Out-of-bounds access in NVIDIA DGX-1 SBIOS before S2W_3A13 allows local users to execute code or interrupt service. The Ofbd handler accesses memory beyond the end of a buffer when operating on a preconditioned heap in AMI SBIOS. Exploitation requires elevated privileges and high-complexity heap preparation; successful access also permits information disclosure or effects on 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

Out-of-bounds access in NVIDIA DGX-1 SBIOS before S2W_3A13 allows local users to execute code or interrupt service. The Ofbd handler accesses memory beyond the end of a buffer when operating on a preconditioned heap in AMI SBIOS. Exploitation requires elevated privileges and high-complexity heap preparation; successful access also permits information disclosure or effects on other components.

The record

CVE
CVE-2023-25506
Published
Apr 22, 2023
Updated
Feb 4, 2025
Vendor
NVIDIA
Product
NVIDIA DGX Systems
Classifications
CWE-788, CWE-787, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Apr 22, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All SBIOS prior to S2W_3A13

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

NVIDIA · NVIDIA DGX Systemsversion=All SBIOS prior to S2W_3A13

Published CVSS scores

7.5NVIDIACVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
8.2NIST National Vulnerability DatabaseCVSS:3.1/AV:L/AC:L/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 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-788Access of Memory Location After End of Buffer
CWE-787Out-of-bounds Write
T1068Exploitation for Privilege Escalation

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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