---
id: CVE-2025-27020
title: >-
  Improper configuration of the SSH service in Infinera MTC-9 allows an
  unauthenticated attacker to execute arbitrary commands and access data on file
  system


  .



  This issue affects MTC-9: from R22.1.1.0275 before R23.0.
summary: >-
  Improper configuration of the SSH service in Infinera MTC-9 allows an
  unauthenticated attacker to execute arbitrary commands and access data on file
  system


  .



  This issue affects MTC-9: from R22.1.1.0275 before R23.0.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-306
vendor: nokia
product: infinera_mtc-9_firmware
affected:
  - 'infinera_mtc-9_firmware >= 22.1.1.0275, < 23.0'
patched:
  - infinera_mtc-9_firmware 23.0
published: '2025-12-08'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T23:10:00.237'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-27020'
references:
  - url: 'https://www.cvcn.gov.it/cvcn/cve/CVE-2025-27020'
    label: a6d3dc9e-0591-4a13-bce7-0f5b31ff6158
tags:
  - nvd
epss: 0.00502
epssPercentile: 0.40643
ingestedAt: '2026-09-30T23:29:32.477Z'
---

## Overview

Improper configuration of the SSH service in Infinera MTC-9 allows an unauthenticated attacker to execute arbitrary commands and access data on file system

.


This issue affects MTC-9: from R22.1.1.0275 before R23.0.

## Affected

- `infinera_mtc-9_firmware >= 22.1.1.0275, < 23.0`

## Remediation

Upgrade past the affected range:

- `infinera_mtc-9_firmware 23.0`