CVE-2025-23343 is a high severity (CVSS 7.6) path traversal flaw in the NVIDIA NVDebug tool that may allow an actor to write files to restricted components. The impact may include information disclosure, denial of service and data tampering. Check NVIDIA's NVDebug bulletin for the fixed version.
What's affected
NVIDIA's bulletin for the NVDebug tool is listed in the NVD record as answer 5696, published in September 2025. The bulletin page did not load for this review, so the affected and fixed versions are not stated here. Do not guess. Open the bulletin from NVIDIA's security page and read its Security Updates table to find the updated version for your platform.
What the record does give is the product, NVIDIA NVDebug, and the CVSS details for this CVE. NVDebug is a diagnostic tool, which tells you where to look: systems where it is installed, often by hardware and firmware teams.
How to check if you're exposed
Find where NVDebug is installed. Ask the hardware, firmware and platform teams that handle NVIDIA systems, and search server tool directories and lab workstations for it.
find / -iname "nvdebug*" 2>/dev/null
If the tool is present, note its version and compare it with the updated version in NVIDIA's bulletin. Also check who can run it. The vectors for the three NVDebug CVEs need low privileges and user interaction, and two of them are local, so the main exposure is on shared machines and management networks.
Reading an inventory is faster than checking host by host. Safeguard has a free in-browser dependency scan at gold.safeguard.sh/scan and a Gold directory you can search for any CVE. Reachability analysis helps you see whether a vulnerable component is actually used in your code, so you can fix the exposed ones first.
What to do now
- Open NVIDIA's NVDebug bulletin (answer 5696) and find the updated version for your platform.
- Install the updated NVDebug and remove older copies from shared systems.
- Limit who can run diagnostic tools on production hosts.
- Avoid running NVDebug with elevated rights unless needed, and avoid running it on untrusted input.
- Record where the tool is installed so future bulletins are easy to act on.
Why it matters
CWE-22 is improper limitation of a pathname to a restricted directory. A tool that builds a path from input can end up writing outside the directory it was meant to use. The NVD text says the result may be writing files to restricted components, but it does not name the files.
The vector here is adjacent network rather than local, with high attack complexity, low privileges, user interaction and a changed scope. Adjacent means the attacker has to be on the same network segment, such as a management network. Keep management networks tightly controlled. The KEV flag is false.
Quick check
Is the attack local or on the network?
The vector uses the adjacent network, so the attacker must be on the same network segment.
Where do I find the fixed version?
In NVIDIA's NVDebug bulletin, answer 5696. This review could not load it.
Sources
Last reviewed: 19 October 2026.
