# CVE-2026-73466: On affected platforms running Arista EOS, under certain circumstances plaintext user passwords

> Authenticated local administrators can read plaintext user passwords from logs if non-standard debugging trace levels are enabled.

- **Severity:** Medium 6.0 (`CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:P/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 15 Sep 2026
- **Updated:** 17 Sep 2026
- **Also known as:** GHSA-h69p-gmv2-fxg5

## What is CVE-2026-73466?

CVE-2026-73466 is a medium-severity vulnerability in Arista Networks EOS, published on 15 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

On affected platforms running Arista EOS, under certain circumstances user passwordss may be written in clear text to log files during operations when specialized non-standard debugging trace levels are explicitly enabled.

To exploit these vulnerabilities, a malicious actor must already possess authenticated local administrative access to the device shell, and specialized non-standard debugging trace levels must be explicitly enabled.

This issue was discovered internally by Arista, and the company is not aware of any malicious exploitation of this vulnerability in customer networks.

Weakness: CWE-532 (Insertion of Sensitive Information into Log File)

## Which versions are affected by CVE-2026-73466?


## How do I fix CVE-2026-73466?

No fix has been published for CVE-2026-73466 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-73466 being exploited?

There is no known exploitation of CVE-2026-73466 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-73466 and fix it if it is affected.

What it is: CVE-2026-73466 is a medium-severity vulnerability in Arista Networks EOS, published on 15 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-73466 in the wild and no public exploit code.

Affected product: Arista Networks EOS. 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-2026-73466/ (Markdown: https://insights.sbomify.com/CVE-2026-73466/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-73466
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-73466
- OSV: https://osv.dev/vulnerability/CVE-2026-73466

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-73466/
Summaries are generated and may contain mistakes; the official description above is the record.