---
id: CVE-2020-3550
title: >-
  A vulnerability in the sfmgr daemon of Cisco Firepower Management Center (FMC)
  Software and Cisco Firepower Threat Defense (FTD) Software could allow an
  authenticated, remote attacker to perform directory traversal and access
  directories…
summary: >-
  A vulnerability in the sfmgr daemon of Cisco Firepower Management Center (FMC)
  Software and Cisco Firepower Threat Defense (FTD) Software could allow an
  authenticated, remote attacker to perform directory traversal and access
  directories…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-22
  - CWE-22
vendor: cisco
product: secure_firewall_management_center
affected:
  - secure_firewall_management_center <= 6.0.1
  - 'secure_firewall_management_center >= 6.3.0, < 6.3.0.6'
  - 'secure_firewall_management_center >= 6.4.0, < 6.4.0.10'
  - secure_firewall_management_center = 6.2.0
  - secure_firewall_management_center = 6.2.1
  - secure_firewall_threat_defense <= 6.0.1
  - 'secure_firewall_threat_defense >= 6.3.0, < 6.3.0.6'
  - 'secure_firewall_threat_defense >= 6.4.0, < 6.4.0.10'
  - secure_firewall_threat_defense = 6.2.0
  - secure_firewall_threat_defense = 6.2.1
patched:
  - secure_firewall_management_center 6.4.0.10
  - secure_firewall_threat_defense 6.4.0.10
published: '2020-10-21'
updated: '2026-08-11'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2020-3550'
references:
  - url: >-
      https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftdfmc-dirtrav-NW8XcuSB
    label: psirt@cisco.com
  - url: >-
      https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftdfmc-dirtrav-NW8XcuSB
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.02205
epssPercentile: 0.81814
ingestedAt: '2026-08-11T19:48:28.741Z'
---

## Overview

A vulnerability in the sfmgr daemon of Cisco Firepower Management Center (FMC) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to perform directory traversal and access directories outside the restricted path. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by using a relative path in specific sfmgr commands. An exploit could allow the attacker to read or write arbitrary files on an sftunnel-connected peer device.

## Affected

- `secure_firewall_management_center <= 6.0.1`
- `secure_firewall_management_center >= 6.3.0, < 6.3.0.6`
- `secure_firewall_management_center >= 6.4.0, < 6.4.0.10`
- `secure_firewall_management_center = 6.2.0`
- `secure_firewall_management_center = 6.2.1`
- `secure_firewall_threat_defense <= 6.0.1`
- `secure_firewall_threat_defense >= 6.3.0, < 6.3.0.6`
- `secure_firewall_threat_defense >= 6.4.0, < 6.4.0.10`
- `secure_firewall_threat_defense = 6.2.0`
- `secure_firewall_threat_defense = 6.2.1`

## Remediation

Upgrade past the affected range:

- `secure_firewall_management_center 6.4.0.10`
- `secure_firewall_threat_defense 6.4.0.10`