# CVE-2026-47503: Memory corruption in Virtual GPU Manager

> A guest VM user can trigger an out-of-bounds write in the NVIDIA vGPU plugin via crafted RPC messages, leading to code execution and privilege escalation.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 30 Sep 2026
- **Updated:** 1 Oct 2026
- **Also known as:** DEBIAN-CVE-2026-47503, GHSA-33rr-wch2-jq8g, UBUNTU-CVE-2026-47503

## What is CVE-2026-47503?

CVE-2026-47503 is a high-severity memory corruption vulnerability in NVIDIA Virtual GPU Manager, published on 30 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

NVIDIA GPU Display Driver for Linux contains a vulnerability in the Virtual GPU Manager (vGPU plugin), where a guest VM user may cause an out-of-bounds write by sending a crafted RPC message with invalid performance state list size parameters. A successful exploit of this vulnerability might lead to code execution, escalation of privileges, data tampering, denial of service, and information disclosure.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2026-47503?


## How do I fix CVE-2026-47503?

Apply the vendor's patch.

## Is CVE-2026-47503 being exploited?

There is no known exploitation of CVE-2026-47503 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-47503 and fix it if it is affected.

What it is: CVE-2026-47503 is a high-severity memory corruption vulnerability in NVIDIA Virtual GPU Manager, published on 30 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-47503 in the wild and no public exploit code.

Affected product: NVIDIA Virtual GPU Manager. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-47503/ (Markdown: https://insights.sbomify.com/CVE-2026-47503/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-47503
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-47503
- OSV: https://osv.dev/vulnerability/CVE-2026-47503

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-47503/
Summaries are generated and may contain mistakes; the official description above is the record.