6.7Medium

Cisco Firepower Management Center Virtual Appliance

CVE-2021-34756

Multiple vulnerabilities in the CLI of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to execute arbitrary commands with root privileges. For more information about these vulnerabilities, see the Details section of this advisory.

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

  1. 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.
  2. 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.

Not sure if your company is exposed?

Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.

Scoring

CVSS
6.7 (v3.1)
Vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-20
Assigned by
psirt@cisco.com

Dates

Published
2021-10-27
Last modified
2026-08-11
Sources
NVD

Affected products

  • Cisco Firepower Management Center Virtual Appliance6.1.0, 6.2.0, 6.2.3, 6.3.0, 6.4.0, 6.4.0.11, 6.5.0, 6.6.0, 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 Center6.1.0, 6.2.0, 6.2.3, 6.3.0, 6.4.0, 6.4.0.11, 6.5.0, 6.6.0, 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.

References