CVE-2022-20826
Summary
| CVE | CVE-2022-20826 |
|---|---|
| State | PUBLISHED |
| Assigner | cisco |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2022-11-15 21:15:22 UTC |
| Updated | 2026-08-11 19:33:44 UTC |
| Description | A vulnerability in the secure boot implementation of Cisco Secure Firewalls 3100 Series that are running Cisco Adaptive Security Appliance (ASA) Software or Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated attacker with physical access to the device to bypass the secure boot functionality. This vulnerability is due to a logic error in the boot process. An attacker could exploit this vulnerability by injecting malicious code into a specific memory location during the boot process of an affected device. A successful exploit could allow the attacker to execute persistent code at boot time and break the chain of trust. |
Risk And Classification
Primary CVSS: v3.1 6.8 MEDIUM from [email protected]
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Problem Types: CWE-501 | NVD-CWE-Other | CWE-501 Trust Boundary Violation
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 6.8 | MEDIUM | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | [email protected] | Secondary | 6.4 | MEDIUM | CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | CVSSV3_1 | 6.4 | MEDIUM | CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
PhysicalAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Cisco | Adaptive Security Appliance Software | 9.17.1 | All | All | All |
| Operating System | Cisco | Adaptive Security Appliance Software | 9.17.1.10 | All | All | All |
| Operating System | Cisco | Adaptive Security Appliance Software | 9.17.1.13 | All | All | All |
| Operating System | Cisco | Adaptive Security Appliance Software | 9.17.1.9 | All | All | All |
| Operating System | Cisco | Adaptive Security Appliance Software | 9.18.1 | All | All | All |
| Operating System | Cisco | Adaptive Security Appliance Software | 9.18.1.3 | All | All | All |
| Hardware | Cisco | Secure Firewall 3105 | - | All | All | All |
| Hardware | Cisco | Secure Firewall 3110 | - | All | All | All |
| Hardware | Cisco | Secure Firewall 3120 | - | All | All | All |
| Hardware | Cisco | Secure Firewall 3130 | - | All | All | All |
| Hardware | Cisco | Secure Firewall 3140 | - | All | All | All |
| Application | Cisco | Secure Firewall Threat Defense | 7.1.0.0 | All | All | All |
| Application | Cisco | Secure Firewall Threat Defense | 7.2.0.0 | All | All | All |
| Application | Cisco | Secure Firewall Threat Defense | 7.2.0.1 | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Cisco | Cisco Adaptive Security Appliance ASA Software | affected 9.17.1 | Not specified |
| CNA | Cisco | Cisco Adaptive Security Appliance ASA Software | affected 9.17.1.9 | Not specified |
| CNA | Cisco | Cisco Adaptive Security Appliance ASA Software | affected 9.17.1.10 | Not specified |
| CNA | Cisco | Cisco Adaptive Security Appliance ASA Software | affected 9.17.1.13 | Not specified |
| CNA | Cisco | Cisco Adaptive Security Appliance ASA Software | affected 9.18.1 | Not specified |
| CNA | Cisco | Cisco Adaptive Security Appliance ASA Software | affected 9.18.1.3 | Not specified |
| CNA | Cisco | Cisco Firepower Threat Defense Software | affected 7.1.0 | Not specified |
| CNA | Cisco | Cisco Firepower Threat Defense Software | affected 7.2.0 | Not specified |
| CNA | Cisco | Cisco Firepower Threat Defense Software | affected 7.2.0.1 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Cisco Secure Firewall 3100 Series Secure Boot Bypass Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | sec.cloudapps.cisco.com | |
| MISC:https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fw3100-secure-boot-5M8mUh26 | MITRE | tools.cisco.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
Exploits
CNA: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
There are currently no legacy QID mappings associated with this CVE.