# CVE-2026-73705: Authenticated Arbitrary File Write leads to Remote Code Execution in HPE Networking Fabric Composer

> Authenticated low-privilege users can write arbitrary files to escalate privileges and execute code on HPE Fabric Composer.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/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:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 1 Sep 2026
- **Updated:** 2 Sep 2026
- **Also known as:** GHSA-422h-h5vm-2pj7

## What is CVE-2026-73705?

CVE-2026-73705 is a high-severity vulnerability in Arubanetworks Fabric Composer, published on 1 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

An arbitrary file write vulnerability in the API of HPE Networking Fabric Composer could allow an authenticated low privilege operator user to escalate privileges. Successful exploitation of this vulnerability may enable the attacker to execute arbitrary commands on the underlying operating system, leading to complete compromise of the affected system.

Weakness: CWE-552 (Files or Directories Accessible to External Parties)

## Which versions are affected by CVE-2026-73705?

It affects 1 product.


Products: Arubanetworks Fabric Composer.

## How do I fix CVE-2026-73705?

No fix has been published for CVE-2026-73705 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-73705 being exploited?

There is no known exploitation of CVE-2026-73705 in the wild and no public exploit code.

## Other vulnerabilities in Arubanetworks Fabric Composer

- [CVE-2026-76657](https://insights.sbomify.com/CVE-2026-76657/): Authentication Bypass in HPE Networking Fabric Composer API allows Administrative Access (critical 10.0)
- [CVE-2026-76658](https://insights.sbomify.com/CVE-2026-76658/): Unauthenticated Remote Code Execution in HPE Networking Fabric Composer SSH Daemon (critical 10.0)
- [CVE-2026-19766](https://insights.sbomify.com/CVE-2026-19766/): Authentication Bypass leads to Administrative control of adjacent network hosts in HPE Networking Fabric Composer (critical 9.6)
- [CVE-2026-73700](https://insights.sbomify.com/CVE-2026-73700/): Cross-site scripting in Fabric Composer (critical 9.0)
- [CVE-2026-73701](https://insights.sbomify.com/CVE-2026-73701/): Unauthenticated Remote Code Execution in HPE Networking Fabric Composer (critical 9.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-73705 and fix it if it is affected.

What it is: CVE-2026-73705 is a high-severity vulnerability in Arubanetworks Fabric Composer, published on 1 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-73705 in the wild and no public exploit code.

Affected product: Arubanetworks Fabric Composer. 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-2026-73705/ (Markdown: https://insights.sbomify.com/CVE-2026-73705/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-73705
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-73705
- OSV: https://osv.dev/vulnerability/CVE-2026-73705

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-73705/
Summaries are generated and may contain mistakes; the official description above is the record.