CVE-2026-20008
MEDIUMCVSS Vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
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2Tags
Description
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.
Analysis
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. …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Validate input sanitization for user-controlled parameters.
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