CVE-2026-20008

Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Lua Code Injection Vulnerability

At a glance

Severity
MEDIUM 6.0
EPSS
EPSS 0.14 % · percentile 3 (2026-10-27)
State
PUBLISHED
Published
Updated
Assigner
cisco
NVD status
Analyzed

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.

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 6.0CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Ncisco
CVSS 3.1MEDIUM 6.0CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:NNVD · psirt@cisco.com (Secondary)

Weaknesses (CWE)

European references

Affected configurations (NVD CPE)

Affected products

ProductVersions
Cisco · Cisco Secure Firewall Adaptive Security Appliance (ASA) Softwareaffected 9.12.3 ; affected 9.12.1 ; affected 9.12.2 ; affected 9.12.4 ; affected 9.12.3.2 ; affected 9.12.3.7
Cisco · Cisco Secure Firewall Threat Defense (FTD) Softwareaffected 6.4.0.1 ; affected 6.4.0.2 ; affected 6.4.0.5 ; affected 6.4.0 ; affected 6.4.0.3 ; affected 6.4.0.4

References

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD