Advisories · Technology

Cisco Firepower Extensible Operating System (FXOS).

Every CVE that names Cisco Firepower Extensible Operating System (FXOS) among its affected products, newest first. Vendors and products are as the CNA wrote them; check the affected versions on each record.

CVE-2026-20099 CVE record

CVSS 6.7 Medium

Cisco UCS Manager and FXOS Software Command Injection Vulnerability
- Cisco Firepower Extensible Operating System (FXOS)
- Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
- Command injection
Not analysed yet 25 Feb 2026
CVE-2026-20091 CVE record

CVSS 4.8 Medium

Cisco UCS Manager and FXOS Software Stored Cross-Site Scripting Vulnerability
- Cisco Firepower Extensible Operating System (FXOS)
- Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
- Cross-site scripting (XSS)
Not analysed yet 25 Feb 2026
CVE-2024-20294 CVE record

CVSS 6.6 Medium

Cisco NX-OS Software: A vulnerability in the Link Layer Discovery Protocol (LLDP) feature of Cisco FXOS…
- Cisco NX-OS Software
- Cisco Unified Computing System (Managed)
- Memory corruption
Not analysed yet 28 Feb 2024
CVE-2023-20234 CVE record

CVSS 4.4 Medium

External control of a file path in Cisco Adaptive Security Appliance (ASA) Software and others
- Cisco Adaptive Security Appliance (ASA) Software
- Cisco Firepower Threat Defense Software
- Path traversal
Not analysed yet 23 Aug 2023
CVE-2023-20200 CVE record

CVSS 7.7 High

Infinite loop in Cisco Unified Computing System (Managed) and others
- Cisco Unified Computing System (Managed)
- Cisco Firepower Extensible Operating System (FXOS)
- Denial of service
Not analysed yet 23 Aug 2023
CVE-2022-20934 CVE record

CVSS 6.0 Medium

Command injection in Cisco Firepower Threat Defense Software and others
- Cisco Firepower Threat Defense Software
- Cisco Firepower Extensible Operating System (FXOS)
- Command injection
Not analysed yet 10 Nov 2022
CVE-2022-20865 CVE record

CVSS 6.7 Medium

Cisco FXOS Software Command Injection Vulnerability
- Cisco Firepower Extensible Operating System (FXOS)
- Command injection
Not analysed yet 25 Aug 2022
CVE-2020-3455 CVE record

CVSS 6.7 Medium

Cisco FXOS Software for Firepower 4100/9300 Series Appliances Secure Boot Bypass Vulnerability
- Cisco Firepower Extensible Operating System (FXOS)
- CWE-693
Not analysed yet 21 Oct 2020
CVE-2020-3459 CVE record

CVSS 6.7 Medium

Cisco FXOS Software for Firepower 4100/9300 Series Command Injection Vulnerability
- Cisco Firepower Extensible Operating System (FXOS)
- Command injection
Not analysed yet 21 Oct 2020
CVE-2020-3545 CVE record

CVSS 6.0 Medium

Cisco FXOS Software Buffer Overflow Vulnerability
- Cisco Firepower Extensible Operating System (FXOS)
- Memory corruption
Not analysed yet 4 Sept 2020
CVE-2020-3166 CVE record

CVSS 4.2 Medium

Cisco FXOS Software CLI Arbitrary File Read and Write Vulnerability
- Cisco Firepower Extensible Operating System (FXOS)
- CWE-20
Not analysed yet 26 Feb 2020
CVE-2020-3169 CVE record

CVSS 6.7 Medium

Cisco FXOS Software CLI Command Injection Vulnerability
- Cisco Firepower Extensible Operating System (FXOS)
- Command injection
Not analysed yet 26 Feb 2020
CVE-2019-12699 CVE record

CVSS 8.8 High

Cisco FXOS Software and Firepower Threat Defense Software Command Injection Vulnerabilities
- Cisco Firepower Extensible Operating System (FXOS)
- CWE-20
Not analysed yet 2 Oct 2019
CVE-2019-1858 CVE record

CVSS 8.6 High

Cisco FXOS and NX-OS Software Simple Network Management Protocol Denial of Service Vulnerability
- Cisco Firepower Extensible Operating System (FXOS)
- CWE-20
Not analysed yet 16 May 2019
CVE-2019-1700 CVE record

CVSS 6.1 Medium

Cisco Firepower 9000 Series Firepower 2-Port 100G Double-Width Network Module Queue Wedge Denial of Service Vulnerability
- Cisco Firepower Extensible Operating System (FXOS)
- CWE-399
Not analysed yet 21 Feb 2019