Cisco Firepower Management Center Virtual Appliance
CVE-2021-34761
A vulnerability in Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to overwrite or append arbitrary data to system files using root-level privileges. The attacker must have administrative credentials on the device. This vulnerability is due to incomplete validation of user input for a specific CLI command. An attacker could exploit this vulnerability by authenticating to the device with administrative privileges and issuing a CLI command with crafted user parameters. A successful exploit could allow the attacker to overwrite or append arbitrary data to system files using root-level privileges.
What this means for your business
- It affects Cisco Firepower Management Center Virtual Appliance. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it only with access to the machine itself, with an administrator login, and without anyone at your company clicking anything.
What to do
- 1Check whether your company or your suppliers run Cisco Firepower Management Center Virtual Appliance, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Not sure if your company is exposed?
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Scoring
- CVSS
- 4.4 (v3.1)
- Vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N- Weakness
- CWE-73
- Assigned by
- psirt@cisco.com
Dates
- Published
- 2021-10-27
- Last modified
- 2026-08-11
- Sources
- NVD
Affected products
- Cisco Firepower Management Center Virtual Appliance6.2.3, 6.4.0, 6.6.1, 6.7.0, 7.0.0, 7.1.0
- Cisco Secure Firewall Threat Defense6.4.0 - 6.4.0.13, 6.6.0 - 6.6.5, 6.7.0 - 6.7.0.3, 7.0.0 - 7.0.1
- Cisco Sourcefire Defense Center6.2.3, 6.4.0, 6.6.1, 6.7.0, 7.0.0, 7.1.0
As listed in the NVD configuration data. Not a statement about your estate.