CVE-2025-20237
Cisco Adaptive Security Appliance (ASA) vulnerability analysis and mitigation

Overview

A vulnerability (CVE-2025-20237) was discovered in Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software. The vulnerability was disclosed on August 14, 2025, and affects multiple versions of the software. This security flaw could allow an authenticated, local attacker with valid administrative credentials to execute arbitrary commands on the underlying operating system with root-level privileges (Cisco Advisory).

Technical details

The vulnerability stems from insufficient input validation of commands that are supplied by the user. It has been assigned a CVSS Base Score of 6.0 (Medium) with a vector string of CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N. The vulnerability is classified under CWE-146 (Improper Neutralization of Expression/Command Delimiters) (NVD, Cisco Advisory).

Impact

A successful exploitation of this vulnerability could allow an attacker to execute commands on the underlying operating system with root-level privileges. This gives the attacker complete control over the affected system, potentially compromising both confidentiality and integrity of the system (Cisco Advisory).

Mitigation and workarounds

Cisco has released software updates that address this vulnerability. There are no workarounds available for this vulnerability. Organizations are advised to upgrade to the latest version of the software as per Cisco's recommendations (Cisco Advisory).

Additional resources


SourceThis report was generated using AI

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