What’s Vulnerable › Products
Cisco Firepower Extensible Operating System (FXOS) vulnerabilities
58 known vulnerabilities, 0 confirmed exploited in the wild (CISA KEV), 2 published in the last 12 months.
Check whether your Cisco Firepower Extensible Operating System (FXOS) version is affected
Latest Cisco Firepower Extensible Operating System (FXOS) vulnerabilities
- CVE-2026-20099 — Cisco UCS Manager and FXOS Software Command Injection Vulnerability (CVSS 6.7)
- CVE-2026-20091 — Cisco UCS Manager and FXOS Software Stored Cross-Site Scripting Vulnerability (CVSS 4.8)
- CVE-2024-20294 — (CVSS 6.6)
- CVE-2023-20234 — (CVSS 6.0)
- CVE-2023-20015 — Cisco Firepower 4100 Series, Firepower 9300 Security Appliances, and UCS Fabric Interconnects Command Injection Vulnerability (CVSS 6.7)
- CVE-2022-20934 — (CVSS 6.7)
- CVE-2022-20625 — Cisco FXOS and NX-OS Software Cisco Discovery Protocol Service Denial of Service Vulnerability (CVSS 4.3)
- CVE-2021-34714 — Multiple Cisco Operating Systems Unidirectional Link Detection Denial of Service Vulnerability (CVSS 7.4)
- CVE-2021-1368 — Cisco FXOS and NX-OS Software Unidirectional Link Detection Denial of Service and Arbitrary Code Execution Vulnerability (CVSS 8.8)
- CVE-2020-3459 — Cisco FXOS Software for Firepower 4100/9300 Series Command Injection Vulnerability (CVSS 7.8)
- CVE-2020-3457 — Cisco FXOS Software Command Injection Vulnerability (CVSS 6.7)
- CVE-2020-3456 — Cisco FXOS Software Firepower Chassis Manager Cross-Site Request Forgery Vulnerability (CVSS 8.8)
- CVE-2020-3455 — Cisco FXOS Software for Firepower 4100/9300 Series Appliances Secure Boot Bypass Vulnerability (CVSS 7.8)
- CVE-2020-3545 — Cisco FXOS Software Buffer Overflow Vulnerability (CVSS 6.7)
- CVE-2020-3517 — Cisco FXOS and NX-OS Software Cisco Fabric Services Denial of Service Vulnerability (CVSS 8.6)
- CVE-2020-3504 — Cisco UCS Manager Software Local Management CLI Denial of Service Vulnerability (CVSS 3.3)
- CVE-2020-3172 — Cisco FXOS and NX-OS Software Cisco Discovery Protocol Arbitrary Code Execution and Denial of Service Vulnerability (CVSS 8.8)
- CVE-2020-3169 — Cisco FXOS Software CLI Command Injection Vulnerability (CVSS 6.7)
- CVE-2020-3167 — Cisco FXOS and UCS Manager Software CLI Command Injection Vulnerability (CVSS 7.8)
- CVE-2020-3166 — Cisco FXOS Software CLI Arbitrary File Read and Write Vulnerability (CVSS 6.7)
- CVE-2020-3120 — Cisco FXOS, IOS XR, and NX-OS Software Cisco Discovery Protocol Denial of Service Vulnerability (CVSS 6.5)
- CVE-2019-1734 — Cisco FXOS and NX-OS Software Sensitive File Read Information Disclosure Vulnerability (CVSS 5.5)
- CVE-2019-12700 — Cisco FTD, FMC, and FXOS Software Pluggable Authentication Module Denial of Service Vulnerability (CVSS 6.5)
- CVE-2019-12699 — Cisco FXOS Software and Firepower Threat Defense Software Command Injection Vulnerabilities (CVSS 7.8)
- CVE-2019-1780 — Cisco FXOS and NX-OS Software Command Injection Vulnerability (CVSS 6.7)