CVE-2022-20826
Last modified
CVE-2022-20826 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. 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. EPSS estimates a 0.32% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Adaptive Security Appliance Software | 9.17.1 |
| Cisco | Adaptive Security Appliance Software | 9.17.1.9 |
| Cisco | Adaptive Security Appliance Software | 9.17.1.10 |
| Cisco | Adaptive Security Appliance Software | 9.17.1.13 |
| Cisco | Adaptive Security Appliance Software | 9.18.1 |
| Cisco | Adaptive Security Appliance Software | 9.18.1.3 |
| Cisco | Firepower Threat Defense | 7.1.0.0 |
| Cisco | Firepower Threat Defense | 7.2.0.0 |
| Cisco | Firepower Threat Defense | 7.2.0.1 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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