← Vulnerability feed

Vulnerability record · CVE-2019-16028 · published 23 September 2020

CVE-2019-16028: Cisco secure firewall management center improper authentication vulnerability

Cisco · Secure Firewall Management Center

A vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) could allow an unauthenticated, remote attacker to bypass authentication and execute arbitrary actions with administrative privileges on an affected device. The vulnerability is due to improper handling of Lightweight Directory Access Protocol (LDAP) authentication responses from an external authentication server. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to gain administrative access to the web-based management interface of the affected device.

9.8 CVSS 3.1 Critical EPSS 3.4% · top 11.8% CWE-287 · Improper authentication
9.8CVSS 3.1 base score, v2 10.0
3.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) could allow an unauthenticated, remote attacker to bypass authentication and execute arbitrary actions with administrative privileges on an affected device. The vulnerability is due to improper handling of Lightweight Directory Access Protocol (LDAP) authentication responses from an external authentication server. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to gain administrative access to the web-based management interface of the affected device.

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

Affected products

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

References

LinkTags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200122-fmc-auth Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200122-fmc-auth Vendor Advisory

Track CVE-2019-16028 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

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-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%8.8CVE-2024-20360Cisco secure firewall management center sql injection vulnerabilityA vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an authenticated, remote attack…EPSS 0.83%

Source: NIST National Vulnerability Database (record CVE-2019-16028), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.