CVE-2026-20018CWE-27

Cisco Firepower Management Center Software and Firepower Threat Defense Path Traversal Vulnerability

Medium · published March 4, 2026

CVSS v3.1
5.9
EPSS
0%
Percentile
37.8
In the wild
Unconfirmed
What it is

A vulnerability in the sftunnel functionality of Cisco Secure Firewall Management Center (FMC) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticated, remote attacker with administrative privileges to write arbitrary files as root on the underlying operating system.

This vulnerability is due to insufficient validation of the directory path during file synchronization. An attacker could exploit this vulnerability by crafting a directory path outside of the expected file location. A successful exploit could allow the attacker to create or replace any file on the underlying operating system.

The record
Technical detail
CVSS v3.1
5.9 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00446 · 37.8th percentile
Weakness
CWE-27 · Path Traversal: 'dir/../../filename'
Published
2026-03-04T17:39Z
EPSS history
Timeline
  • 04 MAR 17:39Z
    Cisco Firepower Management Center Software and Firepower Threat Defense Path Traversal Vulnerability
    cvelistv5