Vulnerability in Cisco Adaptive Security Appliance Software
CVE-2022-20826
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (24.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 24.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Cisco Adaptive Security Appliance Software — versions 9.17.1, 9.17.1.9, 9.17.1.10
- Cisco Adaptive Security Appliance (Asa) Software — versions 9.17.1, 9.17.1.9, 9.17.1.10
- Cisco Firepower Threat Defense Software — versions 7.1.0, 7.2.0, 7.2.0.1
- Cisco Firepower Threat Defense — versions 7.1.0.0, 7.2.0.0, 7.2.0.1
- Cisco Secure Firewall 3105
- Cisco Secure Firewall 3110
- Cisco Secure Firewall 3120
- Cisco Secure Firewall 3130
- Cisco Secure Firewall 3140
- Cisco Secure Firewall Threat Defense — versions 7.1.0.0, 7.2.0.0, 7.2.0.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2022-20826?
- CVE-2022-20826 is a medium-severity vulnerability in Cisco Adaptive Security Appliance Software, classified under Trust Boundary Violation. CVSS score: 6.4/10. Published 2022-11-15.
- How severe is CVE-2022-20826?
- Medium severity. CVSS v3 base score is 6.4 out of 10.
- Is CVE-2022-20826 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.