Cisco firepower extensible operating system (fxos)

This hub aggregates every CVE we track for Cisco firepower extensible operating system (fxos), a product in the networking infrastructure space. Use it to gauge the current risk picture and drill into individual advisories.

Severity distribution

Monthly trend

The 15 most recently published vulnerabilities affecting Cisco firepower extensible operating system (fxos).

• CVE-2026-20099Cisco UCS Manager and FXOS Software Command Injection Vulnerability6.7Feb 25, 2026
• CVE-2026-20091Cisco UCS Manager and FXOS Software Stored Cross-Site Scripting Vulnerability4.8Feb 25, 2026
• CVE-2024-20294A vulnerability in the Link Layer Discovery Protocol (LLDP) feature of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (D...6.6Feb 28, 2024
• CVE-2023-20234A vulnerability in the CLI of Cisco FXOS Software could allow an authenticated, local attacker to create a file or overwrite any file on the filesystem of an affected device, including system files...4.4Aug 23, 2023
• CVE-2023-20200A vulnerability in the Simple Network Management Protocol (SNMP) service of Cisco FXOS Software for Firepower 4100 Series and Firepower 9300 Security Appliances and of Cisco UCS 6300 Series Fabric ...7.7Aug 23, 2023
• CVE-2022-20934A vulnerability in the CLI of Cisco Firepower Threat Defense (FTD) Software and Cisco FXOS Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying oper...6.0Nov 10, 2022
• CVE-2022-20865Cisco FXOS Software Command Injection Vulnerability6.7Aug 25, 2022
• CVE-2020-3455Cisco FXOS Software for Firepower 4100/9300 Series Appliances Secure Boot Bypass Vulnerability7.8Oct 21, 2020
• CVE-2020-3459Cisco FXOS Software for Firepower 4100/9300 Series Command Injection Vulnerability7.8Oct 21, 2020
• CVE-2020-3545Cisco FXOS Software Buffer Overflow Vulnerability6.0Sep 4, 2020
• CVE-2020-3166Cisco FXOS Software CLI Arbitrary File Read and Write Vulnerability6.7Feb 26, 2020
• CVE-2020-3169Cisco FXOS Software CLI Command Injection Vulnerability6.7Feb 26, 2020
• CVE-2019-12699Cisco FXOS Software and Firepower Threat Defense Software Command Injection Vulnerabilities7.8Oct 2, 2019
• CVE-2019-1858Cisco FXOS and NX-OS Software Simple Network Management Protocol Denial of Service Vulnerability8.6May 16, 2019
• CVE-2019-1700Cisco Firepower 9000 Series Firepower 2-Port 100G Double-Width Network Module Queue Wedge Denial of Service Vulnerability6.1Feb 21, 2019