CVE-2020-3458

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software for Firepower 1000/2100 Series Appliances Secure Boot Bypass Vulnerabilities

MEDIUM
6.7
CVSS Score
Published: October 21, 2020 at 06:36 PM UTC
Updated: August 11, 2026 at 07:37 PM UTC
10 products affected across 1 vendorAdaptive Security ApplianceSecure Firewall Threat DefenseFirepower 2110

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Severity
MEDIUM6.7
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

9.10.0 ≤ v < 9.10.1.439.12.0 ≤ v < 9.12.4.39.13.0 ≤ v < 9.13.1.139.14.0 ≤ v < 9.14.1.159.8.0 ≤ v < 9.8.4.269.9.0 ≤ v < 9.9.2.80
Affected range stops below 9.10.1.43, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.12.4.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.13.1.13, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.14.1.15, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.8.4.26, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.9.2.80, so it looks safe — our inference, not a vendor statement
cisco-firepower-1010 (environment) · cisco-firepower-1120 (environment) · cisco-firepower-1140 (environment) · cisco-firepower-1150 (environment) · cisco-firepower-2110 (environment) · cisco-firepower-2120 (environment) · cisco-firepower-2130 (environment) · cisco-firepower-2140 (environment)
v ≤ 6.2.26.3.0 ≤ v < 6.3.0.66.4.0 ≤ v < 6.4.0.106.5.0 ≤ v < 6.5.0.56.6.0
cisco-firepower-1010 (environment) · cisco-firepower-1120 (environment) · cisco-firepower-1140 (environment) · cisco-firepower-1150 (environment) · cisco-firepower-2110 (environment) · cisco-firepower-2120 (environment) · cisco-firepower-2130 (environment) · cisco-firepower-2140 (environment)
All versions
All versions
All versions
All versions
All versions
All versions
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-693NVD-CWE-Other

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