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CVE-2025-23351NVD status: Awaiting Analysis

BlueField GA: Out-of-bounds Write

Published Updated By the CyberSecBulletin desk

CVE-2025-23351 is a critical-severity out-of-bounds write vulnerability in BlueField GA from NVIDIA, with a CVSS 3.1 base score of 9.0 out of 10. It can be exploited from the same local network by an attacker with a low-privileged account, without any action from a user. Affected BlueField GA versions: All versions prior to 46.3008. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.37% chance of exploitation within 30 days, which is low compared with other CVEs.

Patch this week

Critical severity: a successful attack would have severe impact.

What to do

  1. Check which version of BlueField GA you run against the affected versions below, and install the vendor's latest release.

Affected products and versions

VendorProductAffected versionsFixed in
NVIDIABlueField GAAll versions prior to 46.3008Not stated
NVIDIABlueField LTS22All versions prior to 35.8002Not stated
NVIDIABlueField LTS23All versions prior to 39.8002Not stated
NVIDIABlueField LTS24All versions prior to 43.8002Not stated
NVIDIAConnectX GAAll versions prior to 46.3008Not stated
NVIDIAConnectX LTS22All versions prior to 35.8002Not stated
NVIDIAConnectX LTS23All versions prior to 39.8002Not stated
NVIDIAConnectX LTS24All versions prior to 43.8002Not stated
NVIDIAConnectX-4All versions prior to 28.4702Not stated
NVIDIAConnectX-4 LXAll versions prior to 32.1908Not stated

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
AdjacentThe attacker must be on the same local network segment.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
ChangedThe attack can reach beyond the vulnerable component into other systems.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H. Scored by CNA (nvidia.com).

Official description

NVIDIA ConnectX and BlueField contain a vulnerability in the command interface where a local user with virtual function (VF) access may cause a write out of bounds by crafted input. A successful exploit of this vulnerability may lead to arbitrary code execution on the device.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

How developers prevent this class of flaw

  • Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow protection, but the protection can be disabled by the programmer. Be wary that a language's interface to native code may still be subject to overflows, even if the language itself is theoretically safe.
  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. Examples include the Safe C String Library (SafeStr) by Messier and Viega, and the Strsafe.h library from Microsoft. These libraries provide safer versions of overflow-prone string-handling functions.
  • Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking. D3-SFCV (Stack Frame Canary Validation) from D3FEND discusses canary-based detection in detail.

More Out-of-bounds Write vulnerabilities (CWE-787)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in BlueField GA

All BlueField GA vulnerabilities

Recent Out-of-bounds Write vulnerabilities

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