6.7Medium

Cisco Adaptive Security Appliance Software

CVE-2020-3458

Multiple vulnerabilities in the secure boot process of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software for the Firepower 1000 Series and Firepower 2100 Series Appliances could allow an authenticated, local attacker to bypass the secure boot mechanism. The vulnerabilities are due to insufficient protections of the secure boot process. An attacker could exploit these vulnerabilities by injecting code into specific files that are then referenced during the device boot process. A successful exploit could allow the attacker to break the chain of trust and inject code into the boot process of the device, which would be executed at each boot and maintain persistence across reboots.

What this means for your business

  • It affects Cisco Adaptive Security Appliance Software. 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 Adaptive Security Appliance Software, 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-693
Assigned by
psirt@cisco.com

Dates

Published
2020-10-21
Last modified
2026-08-11
Sources
NVD

Affected products

  • Cisco Adaptive Security Appliance Software9.8.0 - 9.8.4.26, 9.9.0 - 9.9.2.80, 9.10.0 - 9.10.1.43, 9.12.0 - 9.12.4.3, 9.13.0 - 9.13.1.13, 9.14.0 - 9.14.1.15
  • Cisco Firepower 1010all versions
  • Cisco Firepower 1120all versions
  • Cisco Firepower 1140all versions
  • Cisco Firepower 1150all versions
  • Cisco Firepower 2110all versions
  • Cisco Firepower 2120all versions
  • Cisco Firepower 2130all versions
  • Cisco Firepower 2140all versions
  • Cisco Secure Firewall Threat Defense- 6.2.2, 6.3.0 - 6.3.0.6, 6.4.0 - 6.4.0.10, 6.5.0 - 6.5.0.5, 6.6.0

As listed in the NVD configuration data. Not a statement about your estate.

References