high CVSS 7.5

CVE-2025-23329·Python vulnerability

NVIDIA Triton Inference Server for Windows and Linux contains a vulnerability where an attacker could cause memory corruption by identifying and accessing the shared memory region used by the Python backend. A successful exploit of this vulnerability might lead to denial of service.

Severity
high
Software
Python
Fixed in
25.08
Published
2025-09-17

Affected versions

Until: 25.08

Fixed in: 25.08

How to fix this CVE

Update NVIDIA Triton Inference Server to version 25.08 or later to remediate this shared memory corruption vulnerability affecting the Python backend. The vulnerability allows unauthenticated attackers to corrupt memory regions, potentially causing service unavailability. Ensure all deployed instances are patched and restart services after updating to apply the security fix.

sudo dnf update python3

Defensia detects this vulnerability

How to check if you are affected

  1. Run `python3 --version` to verify the installed Python version and confirm it matches or exceeds the fixed version for your Triton deployment
  2. Execute `nvidia-smi` and check Triton Inference Server logs at `/var/log/triton/` or container logs to confirm the server version is 25.08 or later
  3. Inspect process memory mappings with `cat /proc/<triton_pid>/maps` to identify shared memory segments (files starting with /dev/shm or memfd) used by the Python backend
  4. Restart Triton Inference Server and verify clean startup without memory corruption warnings: `systemctl restart triton` or equivalent container restart command

FAQ

What is CVE-2025-23329?

CVE-2025-23329 is a memory corruption vulnerability in NVIDIA Triton Inference Server's Python backend that allows unauthenticated remote attackers to access and corrupt shared memory regions, leading to denial of service through server crashes or hang conditions.

Is CVE-2025-23329 being actively exploited?

No, CVE-2025-23329 is not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog and no public exploits are available, though the network-accessible nature of the vulnerability warrants prompt patching.

What versions of Python are affected by CVE-2025-23329?

CVE-2025-23329 affects NVIDIA Triton Inference Server versions up to and including 25.08; the vulnerability is resolved in version 25.08 and later releases. Python 3.x versions used within affected Triton deployments are at risk.

How do I check if my server is vulnerable to CVE-2025-23329?

Run `tritonserver --version` to check your Triton Inference Server version (if below 25.08, you are vulnerable), and verify Python backend is enabled in your model configuration files by searching for `backend: "python"` in your model repositories.

Does Defensia detect CVE-2025-23329?

Yes — Defensia's CVE advisory scanner compares installed package versions against the NVD database. If NVIDIA Triton Inference Server is installed on a monitored server, CVE-2025-23329 will appear in your dashboard with remediation steps and version tracking.

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References

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