Cisco Vulnerabilities and Affected Products
Vulnerabilities associated with Cisco NX-OS Software.
Products
Clear product- Cisco Small Business RV Series Router Firmware262 vulnerabilities
- Cisco IOS XE Software248 vulnerabilities
- Cisco Firepower Threat Defense Software161 vulnerabilities
- Cisco Adaptive Security Appliance (ASA) Software160 vulnerabilities
- Cisco Identity Services Engine Software156 vulnerabilities
- Cisco Firepower Management Center128 vulnerabilities
- Cisco IOS XR Software107 vulnerabilities
- Cisco NX-OS Software88 vulnerabilities
- Cisco Data Center Network Manager74 vulnerabilities
- Cisco SD-WAN vManage61 vulnerabilities
- Cisco SD-WAN Solution54 vulnerabilities
- Cisco Unified Communications Manager52 vulnerabilities
- Cisco Prime Infrastructure50 vulnerabilities
- Cisco Secure Firewall Threat Defense (FTD) Software48 vulnerabilities
- Cisco Webex Meetings46 vulnerabilities
- Cisco Catalyst SD-WAN Manager45 vulnerabilities
- IOS41 vulnerabilities
- Cisco Enterprise NFV Infrastructure Software39 vulnerabilities
- Cisco IOS36 vulnerabilities
- Cisco Unified Contact Center Express36 vulnerabilities
- Cisco WebEx WRF Player35 vulnerabilities
- Cisco Digital Network Architecture Center (DNA Center)33 vulnerabilities
- Cisco Unified Computing System (Managed)33 vulnerabilities
- Cisco Secure Firewall Adaptive Security Appliance (ASA) Software31 vulnerabilities
- Cisco Unity Connection31 vulnerabilities
| Vulnerability | Title and context | CVSS | EPSS | PoCs | Signals | STIX action |
|---|---|---|---|---|---|---|
CVE-2026-20171MEDIUM | Cisco Nexus 3000 and 9000 Series Border Gateway Protocol Denial of Service VulnerabilityA vulnerability in the Border Gateway Protocol (BGP) enforce-first-as feature of Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode could allow an unauthenticated, remote attacker to trigger BGP peer flaps, resulting in a denial of service (DoS) condition. This vulnerability is due to incorrect parsing of a transitive BGP attribute. An attacker could exploit this vulnerability by sending a crafted BGP update through an established BGP peer… CWE-670May 20, 2026 | CVSS6.8v3.1 | EPSS0.467% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2026-20010HIGH | Cisco Nexus 3000 and 9000 Series Switches Link Layer Discovery Protocol Denial of Service VulnerabilityA vulnerability in the Link Layer Discovery Protocol (LLDP) feature of Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause the LLDP process to restart, which could cause an affected device to reload unexpectedly. This vulnerability is due to improper handling of specific fields in an LLDP frame. An attacker could exploit this vulnerability by sending a crafted LLDP packet to an interface of an affected device. A successful exploit could allow the attacker to cause … CWE-805Feb 25, 2026 | CVSS7.4v3.1 | EPSS0.167% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2026-20051HIGH | Cisco Nexus 3600-R and 9500-R Series Switching Platforms Layer 2 Loop Denial of Service VulnerabilityA vulnerability with the Ethernet VPN (EVPN) Layer 2 ingress packet processing of Cisco Nexus 3600 Platform Switches and Cisco Nexus 9500-R Series Switching Platforms could allow an unauthenticated, adjacent attacker to trigger a Layer 2 traffic loop. This vulnerability is due to a logic error when processing a crafted Layer 2 ingress frame. An attacker could exploit this vulnerability by sending a stream of crafted Ethernet frames through the targeted device. A successful exploit could allow… CWE-457Feb 25, 2026 | CVSS7.4v3.1 | EPSS0.156% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2025-20241HIGH | Cisco Nexus 3000 and 9000 Series Switches IS-IS Protocol <TBD> Denial of Service VulnerabilityA vulnerability in the Intermediate System-to-Intermediate System (IS-IS) feature of Cisco NX-OS Software for Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode could allow an unauthenticated, adjacent attacker to cause the IS-IS process to unexpectedly restart, which could cause an affected device to reload. This vulnerability is due to insufficient input validation when parsing an ingress IS-IS packet. An attacker could exploit this vulnerability … CWE-733Aug 27, 2025 | CVSS7.4v3.1 | EPSS0.267% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2025-20262MEDIUM | Cisco Nexus 3000 and 9000 Series Switches Protocol Independent Multicast Version 6 Denial of Service VulnerabilityA vulnerability in the Protocol Independent Multicast Version 6 (PIM6) feature of Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode could allow an authenticated, low-privileged, remote attacker to trigger a crash of the PIM6 process, resulting in a denial of service (DoS) condition. This vulnerability is due to improper processing of PIM6 ephemeral data queries. An attacker could exploit this vulnerability by sending a crafted ephemeral query to an… CWE-476Aug 27, 2025 | CVSS5.0v3.1 | EPSS0.344% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2025-20290MEDIUM | Cisco NXOS Software Sensitive Log Information Disclosure VulnerabilityA vulnerability in the logging feature of Cisco NX-OS Software for Cisco Nexus 3000 Series Switches, Cisco Nexus 9000 Series Switches in standalone NX-OS mode, Cisco UCS 6400 Fabric Interconnects, Cisco UCS 6500 Series Fabric Interconnects, and Cisco UCS 9108 100G Fabric Interconnects could allow an authenticated, local attacker access to sensitive information. This vulnerability is due to improper logging of sensitive information. An attacker could exploit this vulnerability by accessing log… CWE-200Aug 27, 2025 | CVSS5.5v3.1 | EPSS0.134% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2025-20292MEDIUM | Cisco NXOS Software Command Injection VulnerabilityA vulnerability in the CLI of Cisco NX-OS Software could allow an authenticated, local attacker to execute a command injection attack on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must have valid user credentials on the affected device. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by entering crafted input as the argument of an affected CLI command. A successful… CWE-78Aug 27, 2025 | CVSS4.4v3.1 | EPSS3.17% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2025-20191HIGH | Multiple Cisco Products Denial of Service VulnerabilityA vulnerability in the Switch Integrated Security Features (SISF) of Cisco IOS Software, Cisco IOS XE Software, Cisco NX-OS Software, and Cisco Wireless LAN Controller (WLC) AireOS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to the incorrect handling of DHCPv6 packets. An attacker could exploit this vulnerability by sending a crafted DHCPv6 packet to an affected device. A successful ex… CWE-805May 7, 2025 | CVSS7.4v3.1 | EPSS0.235% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2025-20161MEDIUM | Cisco NX-OS Software Command Injection VulnerabilityA vulnerability in the software upgrade process of Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode could allow an authenticated, local attacker with valid Administrator credentials to execute a command injection attack on the underlying operating system of an affected device. This vulnerability is due to insufficient validation of specific elements within a software image. An attacker could exploit this vulnerability by installing a crafted image… CWE-78Feb 26, 2025 | CVSS5.1v3.1 | EPSS0.487% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2025-20111HIGH | Cisco Nexus 3000 and 9000 Series Switches Layer 2 Ethernet Denial of Service VulnerabilityA vulnerability in the health monitoring diagnostics of Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode could allow an unauthenticated, adjacent attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of specific Ethernet frames. An attacker could exploit this vulnerability by sending a sustained rate of crafted Ethernet frames to an affected device… CWE-1220Feb 26, 2025 | CVSS7.4v3.1 | EPSS0.315% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2024-20397MEDIUM | Cisco NX-OS Software Image Verification Bypass VulnerabilityA vulnerability in the bootloader of Cisco NX-OS Software could allow an unauthenticated attacker with physical access to an affected device, or an authenticated, local attacker with administrative credentials, to bypass NX-OS image signature verification. This vulnerability is due to insecure bootloader settings. An attacker could exploit this vulnerability by executing a series of bootloader commands. A successful exploit could allow the attacker to bypass NX-OS image signature verifi… CWE-284Dec 4, 2024 | CVSS5.2v3.1 | EPSS0.304% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2024-20284MEDIUM | Cisco NX-OS Software Python Parser Escape VulnerabilityA vulnerability in the Python interpreter of Cisco NX-OS Software could allow an authenticated, low-privileged, local attacker to escape the Python sandbox and gain unauthorized access to the underlying operating system of the device. The vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by manipulating specific functions within the Python interpreter. A successful exploit could allow an attacker to escape the Python sandbox a… CWE-693Aug 28, 2024 | CVSS5.3v3.1 | EPSS0.194% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2024-20285MEDIUM | Cisco NX-OS Software Python Parser Escape VulnerabilityA vulnerability in the Python interpreter of Cisco NX-OS Software could allow an authenticated, low-privileged, local attacker to escape the Python sandbox and gain unauthorized access to the underlying operating system of the device. The vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by manipulating specific functions within the Python interpreter. A successful exploit could allow an attacker to escape the Python sandbox a… CWE-653Aug 28, 2024 | CVSS5.3v3.1 | EPSS0.194% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2024-20286MEDIUM | Cisco NX-OS Software Python Parser Escape VulnerabilityA vulnerability in the Python interpreter of Cisco NX-OS Software could allow an authenticated, low-privileged, local attacker to escape the Python sandbox and gain unauthorized access to the underlying operating system of the device. The vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by manipulating specific functions within the Python interpreter. A successful exploit could allow an attacker to escape the Python sandbox a… CWE-693Aug 28, 2024 | CVSS5.3v3.1 | EPSS0.194% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2024-20446HIGH | Cisco NX-OS Software DHCPv6 Relay Agent Denial of Service VulnerabilityA vulnerability in the DHCPv6 relay agent of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of specific fields in a DHCPv6 RELAY-REPLY message. An attacker could exploit this vulnerability by sending a crafted DHCPv6 packet to any IPv6 address that is configured on an affected device. A successful exploit could allow the attacker to cause the dhcp_snoop proc… CWE-476Aug 28, 2024 | CVSS8.6v3.1 | EPSS0.784% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2024-20289MEDIUM | Cisco NX-OS Software Command Injection VulnerabilityA vulnerability in the CLI of Cisco NX-OS Software could allow an authenticated, low-privileged, local attacker to execute arbitrary commands on the underlying operating system of an affected device. This vulnerability is due to insufficient validation of arguments for a specific CLI command. An attacker could exploit this vulnerability by including crafted input as the argument of the affected command. A successful exploit could allow the attacker to execute arbitrary commands on the u… CWE-78Aug 28, 2024 | CVSS4.4v3.1 | EPSS0.227% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2024-20411MEDIUM | Cisco NX-OS Bash Arbitrary Code Execution VulnerabilityA vulnerability in Cisco NX-OS Software could allow an authenticated, local attacker with privileges to access the Bash shell to execute arbitrary code as root on an affected device. This vulnerability is due to insufficient security restrictions when executing commands from the Bash shell. An attacker with privileges to access the Bash shell could exploit this vulnerability by executing a specific crafted command on the underlying operating system. A successful exploit could allow the a… CWE-267Aug 28, 2024 | CVSS6.7v3.1 | EPSS0.16% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2024-20413MEDIUM | Cisco NX-OS Bash Privilege Escalation VulnerabilityA vulnerability in Cisco NX-OS Software could allow an authenticated, local attacker with privileges to access the Bash shell to elevate privileges to network-admin on an affected device. This vulnerability is due to insufficient security restrictions when executing application arguments from the Bash shell. An attacker with privileges to access the Bash shell could exploit this vulnerability by executing crafted commands on the underlying operating system. A successful exploit could allow th… CWE-862Aug 28, 2024 | CVSS6.7v3.1 | EPSS0.149% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2024-20399MEDIUM | Cisco NX-OS Software CLI Command Injection VulnerabilityA vulnerability in the CLI of Cisco NX-OS Software could allow an authenticated user in possession of Administrator credentials to execute arbitrary commands as root on the underlying operating system of an affected device. This vulnerability is due to insufficient validation of arguments that are passed to specific configuration CLI commands. An attacker could exploit this vulnerability by including crafted input as the argument of an affected configuration CLI command. A successful exploit … CWE-78Jul 1, 2024 | CVSS6.0v3.1 | EPSS4.31% | PoCs1 | SignalsListed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2024-20294MEDIUM | A 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 (DoS) condition on an affected device. This vulnerability is due to improper handling of specific fields in an LLDP frame. An attacker could exploit this vulnerability by sending a crafted LLDP packet to an interface of an affected device and having an authenticated user retrieve LLDP statistics from … CWE-805Feb 28, 2024 | CVSS6.6v3.1 | EPSS0.318% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2024-20291MEDIUM | A vulnerability in the access control list (ACL) programming for port channel subinterfaces of Cisco Nexus 3000 and 9000 Series Switches in standalone NX-OS mode could allow an unauthenticated, remote attacker to send traffic that should be blocked through an affected device. This vulnerability is due to incorrect hardware programming that occurs when configuration changes are made to port channel member ports. An attacker could exploit this vulnerability by attempting to send traffic through… | CVSS5.8v3.1 | EPSS0.89% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2024-20267HIGH | A vulnerability with the handling of MPLS traffic for Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause the netstack process to unexpectedly restart, which could cause the device to stop processing network traffic or to reload. This vulnerability is due to lack of proper error checking when processing an ingress MPLS frame. An attacker could exploit this vulnerability by sending a crafted IPv6 packet that is encapsulated within an MPLS frame to an MPLS-enabled int… CWE-120Feb 28, 2024 | CVSS8.6v3.1 | EPSS0.926% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2024-20321HIGH | A vulnerability in the External Border Gateway Protocol (eBGP) implementation of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability exists because eBGP traffic is mapped to a shared hardware rate-limiter queue. An attacker could exploit this vulnerability by sending large amounts of network traffic with certain characteristics through an affected device. A successful exploit could allow th… | CVSS8.6v3.1 | EPSS0.709% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2023-20115MEDIUM | A vulnerability in the SFTP server implementation for Cisco Nexus 3000 Series Switches and 9000 Series Switches in standalone NX-OS mode could allow an authenticated, remote attacker to download or overwrite files from the underlying operating system of an affected device. This vulnerability is due to a logic error when verifying the user role when an SFTP connection is opened to an affected device. An attacker could exploit this vulnerability by connecting and authenticating via SFTP as a v… CWE-671Aug 23, 2023 | CVSS5.4v3.1 | EPSS0.439% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2023-20169HIGH | A vulnerability in the Intermediate System-to-Intermediate System (IS-IS) protocol of Cisco NX-OS Software for the Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode could allow an unauthenticated, adjacent attacker to cause the IS-IS process to unexpectedly restart, which could cause an affected device to reload. This vulnerability is due to insufficient input validation when parsing an ingress IS-IS packet. An attacker could exploit this vulnerabi… | CVSS7.4v3.1 | EPSS0.291% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |