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Vulnerability record · CVE-2026-20044 · published 4 March 2026

CVE-2026-20044: Cisco secure firewall management center improper privilege management vulnerability

Cisco · Secure Firewall Management Center

A vulnerability in the lockdown mechanism of Cisco Secure Firewall Management Center (FMC) Software could allow an authenticated, local attacker to perform arbitrary commands as root. This vulnerability is due to insufficient restrictions on remediation modules while in lockdown mode. An attacker could exploit this vulnerability by sending crafted input to the system CLI of the affected device. A successful exploit could allow the attacker to run arbitrary commands or code as root, even when the system is in lockdown mode. To exploit this vulnerability, the attacker must have valid administrative credentials.

6.0 CVSS 3.1 Medium EPSS 0.14% · top 96.9% CWE-269 · Improper privilege management
6.0CVSS 3.1 base score
0.14%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
2 Sep 2026Last modified by NVD

Description

A vulnerability in the lockdown mechanism of Cisco Secure Firewall Management Center (FMC) Software could allow an authenticated, local attacker to perform arbitrary commands as root. This vulnerability is due to insufficient restrictions on remediation modules while in lockdown mode. An attacker could exploit this vulnerability by sending crafted input to the system CLI of the affected device. A successful exploit could allow the attacker to run arbitrary commands or code as root, even when the system is in lockdown mode. To exploit this vulnerability, the attacker must have valid administrative credentials.

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-cmd-inject-S9ZM4EJf Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2026-20131Cisco Secure Firewall Management Center Java deserialization RCECisco Secure Firewall Management Center (FMC) web management interface deserializes a user-supplied Java byte stream without validation, allowing una…KEVEPSS 43%analysed10.0CVE-2026-20079Cisco Secure Firewall Management Center authentication bypass to rootCisco Secure Firewall Management Center (FMC) Software contains an authentication bypass caused by an improper system process created at boot time. A…KEVEPSS 88%analysed5.3CVE-2026-20316Cisco Secure Firewall Management Center static credentials allow unauthenticated loginCisco Secure Firewall Management Center (FMC) Software contains hard-coded credentials for a low-privileged account in its web interface. An unauthen…KEVEPSS 35%analysed10.0CVE-2025-20265Cisco secure firewall management center injection vulnerabilityA vulnerability in the RADIUS subsystem implementation of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remo…EPSS 16%9.9CVE-2024-20424Cisco secure firewall management center os command injection vulnerabilityA vulnerability in the web-based management interface of Cisco Secure Firewall Management Center (FMC) Software, formerly Firepower Management Center…EPSS 0.94%9.9CVE-2023-20048Cisco secure firewall management center improper privilege management vulnerabilityA vulnerability in the web services interface of Cisco Firepower Management Center (FMC) Software could allow an authenticated, remote attacker to ex…EPSS 16%9.8CVE-2019-16028Cisco secure firewall management center improper authentication vulnerabilityA vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) could allow an unauthenticated, remote attacker to b…EPSS 3.4%9.8CVE-2020-3318Cisco secure firewall management center hard-coded credentials vulnerabilityMultiple vulnerabilities in Cisco Firepower Management Center (FMC) Software and Cisco Firepower User Agent Software could allow an attacker to acces…EPSS 0.96%

Source: NIST National Vulnerability Database (record CVE-2026-20044), CISA KEV, FIRST EPSS (scores of 2026-10-10). This page is refreshed as NVD updates the record.