Files or Directories Accessible to External Parties in Cisco Firepower Threat Defense Software

Published: 2021-04-29
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-1256
Exploitation vector Local
Public exploit N/A
Vulnerable software
Cisco Firepower Threat Defense (FTD)
Hardware solutions / Security hardware applicances

Vendor Cisco Systems, Inc

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Files or Directories Accessible to External Parties

EUVDB-ID: #VU52741

Risk: Low

CVSSv3.1: 5.2 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-1256

CWE-ID: CWE-552 - Files or Directories Accessible to External Parties

Exploit availability: No


The vulnerability allows a local user to overwrite files on the target system 

The vulnerability exists due to insufficient validation of user input for the file path in a specific CLI command. A local administrator can overwrite arbitrary files on the file system of the affected device.


Install updates from vendor's website.

Vulnerable software versions

Cisco Firepower Threat Defense (FTD): 6.4.0

CPE2.3 External links

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.