Lua Injection Vulnerability in Cisco Secure Firewall Products
CVE-2026-20008

6MEDIUM

Key Information:

Vendor

Cisco
Status
Cisco Secure Firewall Adaptive Security Appliance (asa) Software
Cisco Secure Firewall Threat Defense (ftd) Software
Vendor
CVE Published:
4 March 2026

Badges

👾 Exploit Exists

What is CVE-2026-20008?

A vulnerability exists in Cisco Secure Firewall ASA and FTD software due to insufficient input sanitation of CLI command parameters. An authenticated local attacker with valid Administrator credentials could exploit this weakness by crafting malicious Lua code. If successfully executed, the attacker may gain root access to the underlying operating system, leading to arbitrary code execution. This risk highlights the importance of secure coding practices and proper input validation to safeguard against potential exploits.

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Affected Version(s)

Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12.3

Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12.1

Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12.2

References

https://sec.cloudapps.cisco.com/security/center/content/C...

CVSS V3.1

Score:
6
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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