Adaptive Security Appliance Software
CVE-2026-20008
MEDIUM
Severity by source
AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Primary rating from Vendor (cisco) · only source for this CVE.
CVSS VectorVendor: cisco
Lifecycle Timeline
2DescriptionCVE.org
A vulnerability in a small subset of CLI commands that are used on Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticated, local attacker to craft Lua code that could be used on the underlying operating system as root.
This vulnerability exists because user-provided input is not properly sanitized. An attacker could exploit this vulnerability by crafting valid Lua code and submitting it as a malicious parameter for a CLI command. A successful exploit could allow the attacker to inject Lua code, which could lead to arbitrary code execution as the root user. To exploit this vulnerability, an attacker must have valid Administrator credentials.
AnalysisAI
Insufficient input sanitization in select CLI commands on Cisco Secure Firewall ASA and FTD Software allows authenticated local administrators to execute arbitrary code as root by injecting malicious Lua code. An attacker with valid administrator credentials can craft specially formatted parameters to achieve code execution with elevated privileges. No patch is currently available.
Technical ContextAI
Classified as CWE-78 (OS Command Injection). Affects a small subset of CLI commands. A vulnerability in a small subset of CLI commands that are used on Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticated, local attacker to craft Lua code that could be used on the underlying operating system as root.
This vulnerability exists because user-provided input is not properly sanitized. An attacker could exploit this vulnerability by crafting valid Lua code and submitting it as a ma
RemediationAI
Monitor vendor advisories for a patch.
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Same weakness CWE-78 – OS Command Injection
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External POC / Exploit Code
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