CVE-2020-3550: Cisco Firepower Management Center Software and Firepower Threat Defense Software Directory Traversal Vulnerability

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-10-21 · updated 2026-08-11
Weakness: CWE-22

Description

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 products

Cisco Firepower Management Center: through 6.0.1; from 6.3.0 before 6.3.0.6; from 6.4.0 before 6.4.0.10; 6.2.0, 6.2.1 — fixed in 6.3.0.6, 6.4.0.10
Cisco Firepower Threat Defense Software: through 6.0.1; from 6.3.0 before 6.3.0.6; from 6.4.0 before 6.4.0.10; 6.2.0, 6.2.1 — fixed in 6.3.0.6, 6.4.0.10

How to fix

Upgrade to a fixed version: Cisco Firepower Management Center 6.3.0.6, 6.4.0.10; Cisco Firepower Threat Defense Software 6.3.0.6, 6.4.0.10. Check the vendor advisory for mitigations.

References

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