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.

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Fixes

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Workaround

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History

Wed, 04 Mar 2026 18:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Cisco Firepower Management Center Software and Firepower Threat Defense Path Traversal Vulnerability
Weaknesses CWE-27
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2026-03-04T17:39:46.973Z

Reserved: 2025-10-08T11:59:15.351Z

Link: CVE-2026-20018

cve-icon Vulnrichment

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cve-icon NVD

Status : Received

Published: 2026-03-04T18:16:16.407

Modified: 2026-03-04T18:16:16.407

Link: CVE-2026-20018

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses