CVE-2020-3458: cisco adaptive_security_appliance_software Protection Mechanism Failure
Vulnerability summary
CVE-2020-3458 is a medium (CVSS 6.7) Protection Mechanism Failure vulnerability in cisco adaptive_security_appliance_software. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 23.7% of scored vulnerabilities.
Timeline
- 21-10-2020PublishedVulnerability first disclosed.
- 13-11-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
4 scores · 2 sources · 3 versions- NVDNIST6.7MediumCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.32%
Chance of exploitation in the next 30 days
Percentile
24%
Versus all other CVEs
30-day change
0.00 pp
From 0.32% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Cisco3 products
- adaptive_security_appliance_software≥ 9.8.0, < 9.8.4.26 | ≥ 9.9.0, < 9.9.2.80 | ≥ 9.10.0, < 9.10.1.43 | ≥ 9.12.0, < 9.12.4.3 | ≥ 9.13.0, < 9.13.1.13 | ≥ 9.14.0, < 9.14.1.15
- cisco adaptive security appliance (asa) softwaren/a
- secure_firewall_threat_defense≤ 6.2.2 | ≥ 6.3.0, < 6.3.0.6 | ≥ 6.4.0, < 6.4.0.10 | ≥ 6.5.0, < 6.5.0.5 | 6.6.0
1 vendor · 3 products
References
1 links- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-sbbyp-KqP6NgrEVendor AdvisoryX Refsource CISCO