CVE-2022-20826: cisco adaptive_security_appliance_software Trust Boundary Violation
Vulnerability summary
CVE-2022-20826 is a medium (CVSS 6.8) Trust Boundary Violation vulnerability in cisco adaptive_security_appliance_software. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 26.1% of scored vulnerabilities.
Timeline
- 10-11-2022PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 2 sources · 1 version- CVE.orgCNA6.4MediumCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HDiffers
EPSS trend
Probability
0.34%
Chance of exploitation in the next 30 days
Percentile
26%
Versus all other CVEs
30-day change
+0.01 pp
From 0.33% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Cisco4 products
- adaptive_security_appliance_software9.17.1 | 9.17.1.9 | 9.17.1.10 | 9.17.1.13 | 9.18.1 | 9.18.1.3
- cisco adaptive security appliance (asa) software9.17.1 | 9.17.1.9 | 9.17.1.10 | 9.17.1.13 | 9.18.1 | 9.18.1.3
- cisco firepower threat defense software7.1.0 | 7.2.0 | 7.2.0.1
- secure_firewall_threat_defense7.1.0.0 | 7.2.0.0 | 7.2.0.1
1 vendor · 4 products