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Cisco NX-OS / Nexus Security Advisories & Vulnerabilities

Recent Cisco PSIRT advisories affecting NX-OS software on Nexus data center switches. Search, check severity and CVSS, and get a remediation or refresh quote from an authorized Cisco partner.

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38 recent advisories affecting Cisco NX-OS / Nexus

  • Cisco Nexus Dashboard Fabric Controller Arbitrary Command Execution Vulnerability

    Critical · CVSS 9.9
    CVE-2024-20432Published Oct 2, 2024cisco-sa-ndfc-cmdinj-UvYZrKfr

    Affected: Cisco Data Center Network Manager

  • Cisco Nexus Dashboard Unauthorized Access Vulnerabilities

    Critical · CVSS 9.8
    CVE-2022-20857, CVE-2022-20858, CVE-2022-20861Published Jul 20, 2022cisco-sa-ndb-mhcvuln-vpsBPJ9y

    Affected: Cisco Nexus Dashboard

  • Cisco NX-OS Software Link Layer Discovery Protocol Denial of Service Vulnerability

    High · CVSS 7.4
    CVE-2026-20010Published Feb 25, 2026cisco-sa-n3kn9k_aci_lldp_dos-NdgRrrA3

    Affected: Cisco Unified Computing System (Managed) , Cisco NX-OS Software 10.3(1), Cisco NX-OS Software 10.3(2), Cisco NX-OS Software 10.3(3), Cisco NX-OS Software 10.3(99w), Cisco NX-OS Software 10.3(3w), and 33 more

  • Cisco Nexus 9000 Series Fabric Switches in ACI Mode Denial of Service Vulnerability

    High · CVSS 7.4
    CVE-2026-20033Published Feb 25, 2026cisco-sa-nxos-cpdos-qLsv6pFD

    Affected: Cisco NX-OS System Software in ACI Mode 15.2(1g), Cisco NX-OS System Software in ACI Mode 15.2(2e), Cisco NX-OS System Software in ACI Mode 15.2(2f), Cisco NX-OS System Software in ACI Mode 15.2(2g), Cisco NX-OS System Software in ACI Mode 15.2(2h), Cisco NX-OS System Software in ACI Mode 15.2(3e), and 51 more

  • Cisco Nexus 9000 Series Fabric Switches in ACI Mode SNMP Denial of Service Vulnerability

    High · CVSS 7.7
    CVE-2026-20048Published Feb 25, 2026cisco-sa-nxos-dsnmp-cNN39Uh

    Affected: Cisco NX-OS System Software in ACI Mode 15.2(1g), Cisco NX-OS System Software in ACI Mode 15.2(2e), Cisco NX-OS System Software in ACI Mode 15.2(2f), Cisco NX-OS System Software in ACI Mode 15.2(2g), Cisco NX-OS System Software in ACI Mode 15.2(2h), Cisco NX-OS System Software in ACI Mode 15.2(3e), and 51 more

  • Cisco Nexus 3600 and 9500-R Series Switching Platforms Layer 2 Loop Denial of Service Vulnerability

    High · CVSS 7.4
    CVE-2026-20051Published Feb 25, 2026cisco-sa-nxos-ether-dos-Kv8YNWZ4

    Affected: Cisco NX-OS Software 9.2(1), Cisco NX-OS Software 9.2(2), Cisco NX-OS Software 9.2(2t), Cisco NX-OS Software 9.2(3), Cisco NX-OS Software 9.2(3y), Cisco NX-OS Software 9.2(4), and 69 more

  • Cisco Nexus 3000 and 9000 Series Switches Intermediate System-to-Intermediate System Denial of Service Vulnerability

    High · CVSS 7.4
    CVE-2025-20241Published Aug 27, 2025cisco-sa-n39k-isis-dos-JhJA8Rfx

    Affected: Cisco NX-OS Software 6.0(2)A8(1), Cisco NX-OS Software 6.0(2)A8(2), Cisco NX-OS Software 6.0(2)A8(3), Cisco NX-OS Software 6.0(2)A8(4), Cisco NX-OS Software 6.0(2)A8(4a), Cisco NX-OS Software 6.0(2)A8(5), and 120 more

  • Cisco Nexus Dashboard Fabric Controller SSH Host Key Validation Vulnerability

    High · CVSS 8.7
    CVE-2025-20163Published Jun 4, 2025cisco-sa-ndfc-shkv-snQJtjrp

    Affected: Cisco Data Center Network Manager , Cisco Nexus Dashboard

  • Multiple Cisco Products Switch Integrated Security Features DHCPv6 Denial of Service Vulnerability

    High · CVSS 7.4
    CVE-2025-20191Published May 7, 2025cisco-sa-sisf-dos-ZGwt4DdY

    Affected: Cisco IOS 15.2(6)E, Cisco IOS 15.2(6)E0a, Cisco IOS 15.2(6)E1, Cisco IOS 15.2(6)E0c, Cisco IOS 15.2(6)E2, Cisco IOS 15.2(6)E1a, and 322 more

  • Cisco Nexus 3000 and 9000 Series Switches Health Monitoring Diagnostics Denial of Service Vulnerability

    High · CVSS 7.4
    CVE-2025-20111Published Feb 26, 2025cisco-sa-n3kn9k-healthdos-eOqSWK4g

    Affected: Cisco NX-OS Software 9.3(1), Cisco NX-OS Software 9.3(2), Cisco NX-OS Software 9.3(3), Cisco NX-OS Software 9.3(1z), Cisco NX-OS Software 9.3(4), Cisco NX-OS Software 9.3(5), and 47 more

  • Cisco NX-OS Software Image Verification Bypass Vulnerability

    High · CVSS 5.2
    CVE-2024-20397Published Dec 4, 2024cisco-sa-nxos-image-sig-bypas-pQDRQvjL

    Affected: Cisco Unified Computing System (Managed) , Cisco NX-OS Software 6.0(2)A8(1), Cisco NX-OS Software 6.0(2)A8(2), Cisco NX-OS Software 6.0(2)A8(3), Cisco NX-OS Software 6.0(2)A8(4), Cisco NX-OS Software 6.0(2)A8(4a), and 303 more

  • Cisco Nexus Dashboard Fabric Controller SQL Injection Vulnerability

    High · CVSS 8.8
    CVE-2024-20536Published Nov 6, 2024cisco-sa-ndfc-sqli-CyPPAxrL

    Affected: Cisco Data Center Network Manager

  • Cisco Nexus Dashboard Fabric Controller Remote Code Execution Vulnerability

    High · CVSS 8.8
    CVE-2024-20449Published Oct 2, 2024cisco-sa-ndfc-ptrce-BUSHLbp

    Affected: Cisco Data Center Network Manager

  • Cisco NX-OS Software DHCPv6 Relay Agent Denial of Service Vulnerability

    High · CVSS 8.6
    CVE-2024-20446Published Aug 28, 2024cisco-sa-nxos-dhcp6-relay-dos-znEAA6xn

    Affected: Cisco NX-OS Software 8.2(11), Cisco NX-OS Software 9.3(9), Cisco NX-OS Software 10.2(1), Cisco NX-OS Software 10.2(1q)

  • Cisco Nexus Dashboard Fabric Controller Plug and Play Arbitrary File Read Vulnerability

    High · CVSS 7.5
    CVE-2024-20348Published Apr 3, 2024cisco-sa-ndfc-dir-trav-SSn3AYDw

    Affected: Cisco Data Center Network Manager

  • Cisco NX-OS Software MPLS Encapsulated IPv6 Denial of Service Vulnerability

    High · CVSS 8.6
    CVE-2024-20267Published Feb 28, 2024cisco-sa-ipv6-mpls-dos-R9ycXkwM

    Affected: Cisco NX-OS Software 6.0(2)A8(1), Cisco NX-OS Software 6.0(2)A8(2), Cisco NX-OS Software 6.0(2)A8(3), Cisco NX-OS Software 6.0(2)A8(4), Cisco NX-OS Software 6.0(2)A8(4a), Cisco NX-OS Software 6.0(2)A8(5), and 109 more

  • Cisco NX-OS Software External Border Gateway Protocol Denial of Service Vulnerability

    High · CVSS 8.6
    CVE-2024-20321Published Feb 28, 2024cisco-sa-nxos-ebgp-dos-L3QCwVJ

    Affected: Cisco NX-OS Software 7.0(3)F3(1), Cisco NX-OS Software 7.0(3)F3(2), Cisco NX-OS Software 7.0(3)F3(3), Cisco NX-OS Software 7.0(3)F3(3a), Cisco NX-OS Software 7.0(3)F3(4), Cisco NX-OS Software 7.0(3)F3(3c), and 53 more

  • HTTP/2 Rapid Reset Attack Affecting Cisco Products: October 2023

    High · CVSS 7.5
    CVE-2023-44487Published Oct 16, 2023cisco-sa-http2-reset-d8Kf32vZ

    Affected: Cisco Unified Contact Center Enterprise , Cisco NX-OS Software , Cisco Secure Web Appliance , Cisco Prime Network Registrar , Cisco TelePresence Video Communication Server (VCS) Expressway , Cisco Evolved Programmable Network Manager (EPNM) , and 5 more

  • Cisco NX-OS Software TACACS+ or RADIUS Remote Authentication Directed Request Denial of Service Vulnerability

    High · CVSS 7.1
    CVE-2023-20168Published Aug 23, 2023cisco-sa-nxos-remoteauth-dos-XB6pv74m

    Affected: Cisco NX-OS Software 6.0(2)A8(1), Cisco NX-OS Software 6.0(2)A8(2), Cisco NX-OS Software 6.0(2)A8(3), Cisco NX-OS Software 6.0(2)A8(4), Cisco NX-OS Software 6.0(2)A8(4a), Cisco NX-OS Software 6.0(2)A8(5), and 168 more

  • Cisco Nexus 3000 and 9000 Series Switches IS-IS Protocol Denial of Service Vulnerability

    High · CVSS 7.4
    CVE-2023-20169Published Aug 23, 2023cisco-sa-nxos-n3_9k-isis-dos-FTCXB4Vb

    Affected: Cisco NX-OS Software 10.3(2)

  • Cisco ACI Multi-Site CloudSec Encryption Information Disclosure Vulnerability

    High · CVSS 7.4
    CVE-2023-20185Published Jul 5, 2023cisco-sa-aci-cloudsec-enc-Vs5Wn2sX

    Affected: Cisco NX-OS System Software in ACI Mode 14.0(1h), Cisco NX-OS System Software in ACI Mode 14.0(2c), Cisco NX-OS System Software in ACI Mode 14.0(3d), Cisco NX-OS System Software in ACI Mode 14.0(3c), Cisco NX-OS System Software in ACI Mode 14.1(1i), Cisco NX-OS System Software in ACI Mode 14.1(1j), and 107 more

  • Cisco Nexus 9000 Series Fabric Switches in ACI Mode Link Layer Discovery Protocol Memory Leak Denial of Service Vulnerability

    High · CVSS 7.4
    CVE-2023-20089Published Feb 22, 2023cisco-sa-aci-lldp-dos-ySCNZOpX

    Affected: Cisco NX-OS System Software in ACI Mode , Cisco NX-OS System Software in ACI Mode 15.2(1g), Cisco NX-OS System Software in ACI Mode 15.2(2e), Cisco NX-OS System Software in ACI Mode 15.2(2f), Cisco NX-OS System Software in ACI Mode 15.2(2g), Cisco NX-OS System Software in ACI Mode 15.2(2h), and 11 more

  • Cisco Nexus Dashboard Denial of Service Vulnerability

    High · CVSS 7.5
    CVE-2023-20014Published Feb 15, 2023cisco-sa-ndb-dnsdos-bYscZOsu

    Affected: Cisco Nexus Dashboard

  • Cisco NX-OS Software OSPFv3 Denial of Service Vulnerability

    High · CVSS 8.6
    CVE-2022-20823Published Aug 24, 2022cisco-sa-nxos-ospfv3-dos-48qutcu

    Affected: Cisco NX-OS Software 6.0(2)A8(1), Cisco NX-OS Software 6.0(2)A8(2), Cisco NX-OS Software 6.0(2)A8(3), Cisco NX-OS Software 6.0(2)A8(4), Cisco NX-OS Software 6.0(2)A8(4a), Cisco NX-OS Software 6.0(2)A8(5), and 225 more

  • Cisco FXOS and NX-OS Software Cisco Discovery Protocol Denial of Service and Arbitrary Code Execution Vulnerability

    High · CVSS 8.8
    CVE-2022-20824Published Aug 24, 2022cisco-sa-nxos-cdp-dos-ce-wWvPucC9

    Affected: Cisco Unified Computing System (Managed) , Cisco NX-OS Software 6.0(2)A8(1), Cisco NX-OS Software 6.0(2)A8(2), Cisco NX-OS Software 6.0(2)A8(3), Cisco NX-OS Software 6.0(2)A8(4), Cisco NX-OS Software 6.0(2)A8(4a), and 303 more

  • Cisco ACI Multi-Site Orchestrator Privilege Escalation Vulnerability

    High · CVSS 8.8
    CVE-2022-20921Published Aug 24, 2022cisco-sa-mso-prvesc-BPFp9cZs

    Affected: Cisco Nexus Dashboard Orchestrator

  • Cisco Nexus Dashboard SSL Certificate Validation Vulnerability

    High · CVSS 7.4
    CVE-2022-20860Published Jul 20, 2022cisco-sa-nd-tlsvld-TbAQLp3N

    Affected: Cisco Nexus Dashboard

  • Cisco Nexus 9000 Series Switches Bidirectional Forwarding Detection Denial of Service Vulnerability

    High · CVSS 8.6
    CVE-2022-20623Published Feb 23, 2022cisco-sa-nxos-bfd-dos-wGQXrzxn

    Affected: Cisco NX-OS Software 7.0(3)I6(2), Cisco NX-OS Software 7.0(3)I7(1), Cisco NX-OS Software 7.0(3)I7(2), Cisco NX-OS Software 7.0(3)I7(3), Cisco NX-OS Software 7.0(3)I7(4), Cisco NX-OS Software 7.0(3)I7(5), and 33 more

  • Cisco NX-OS Software NX-API Command Injection Vulnerability

    High · CVSS 8.8
    CVE-2022-20650Published Feb 23, 2022cisco-sa-nxos-nxapi-cmdinject-ULukNMZ2

    Affected: Cisco NX-OS Software 6.0(2)A8(1), Cisco NX-OS Software 6.0(2)A8(2), Cisco NX-OS Software 6.0(2)A8(3), Cisco NX-OS Software 6.0(2)A8(4), Cisco NX-OS Software 6.0(2)A8(4a), Cisco NX-OS Software 6.0(2)A8(5), and 100 more

  • Cisco NX-OS Software Cisco Fabric Services Over IP Denial of Service Vulnerability

    High · CVSS 8.6
    CVE-2022-20624Published Feb 23, 2022cisco-sa-cfsoip-dos-tpykyDr

    Affected: Cisco Unified Computing System (Managed) , Cisco Unified Computing System (Standalone) , Cisco Unified Computing System E-Series Software (UCSE) , Cisco NX-OS Software 6.0(2)A8(1), Cisco NX-OS Software 6.0(2)A8(2), Cisco NX-OS Software 6.0(2)A8(3), and 80 more

  • Cisco NX-OS Software MPLS OAM Denial of Service Vulnerability

    High · CVSS 8.6
    CVE-2021-1588Published Aug 25, 2021cisco-sa-nxos-mpls-oam-dos-sGO9x5GM

    Affected: Cisco NX-OS Software 6.0(2)A8(1), Cisco NX-OS Software 6.0(2)A8(2), Cisco NX-OS Software 6.0(2)A8(3), Cisco NX-OS Software 6.0(2)A8(4), Cisco NX-OS Software 6.0(2)A8(4a), Cisco NX-OS Software 6.0(2)A8(5), and 103 more

  • Cisco Nexus 9000 Series Fabric Switches ACI Mode Multi-Pod and Multi-Site TCP Denial of Service Vulnerability

    High · CVSS 8.6
    CVE-2021-1586Published Aug 25, 2021cisco-sa-n9kaci-tcp-dos-YXukt6gM

    Affected: Cisco NX-OS System Software in ACI Mode 13.2(1l), Cisco NX-OS System Software in ACI Mode 13.2(1m), Cisco NX-OS System Software in ACI Mode 13.2(2l), Cisco NX-OS System Software in ACI Mode 13.2(2o), Cisco NX-OS System Software in ACI Mode 13.2(3i), Cisco NX-OS System Software in ACI Mode 13.2(3n), and 76 more

  • Cisco Nexus 9000 Series Fabric Switches ACI Mode Queue Wedge Denial of Service Vulnerability

    High · CVSS 8.6
    CVE-2021-1523Published Aug 25, 2021cisco-sa-n9kaci-queue-wedge-cLDDEfKF

    Affected: Cisco NX-OS System Software in ACI Mode 13.2(1l), Cisco NX-OS System Software in ACI Mode 13.2(1m), Cisco NX-OS System Software in ACI Mode 13.2(2l), Cisco NX-OS System Software in ACI Mode 13.2(2o), Cisco NX-OS System Software in ACI Mode 13.2(3i), Cisco NX-OS System Software in ACI Mode 13.2(3n), and 54 more

  • Cisco NX-OS Software VXLAN OAM (NGOAM) Denial of Service Vulnerability

    High · CVSS 8.6
    CVE-2021-1587Published Aug 25, 2021cisco-sa-nxos-ngoam-dos-LTDb9Hv

    Affected: Cisco NX-OS Software 9.2(1), Cisco NX-OS Software 9.2(2), Cisco NX-OS Software 9.2(2t), Cisco NX-OS Software 9.2(3), Cisco NX-OS Software 9.2(3y), Cisco NX-OS Software 9.2(4), and 13 more

  • Cisco Nexus 3000 and 9000 Series Switches Border Gateway Protocol Denial of Service Vulnerability

    Medium · CVSS 6.8
    CVE-2026-20171Published May 20, 2026cisco-sa-bgp-iefab-3hb2pwtx

    Affected: Cisco NX-OS Software 10.2(1), Cisco NX-OS Software 10.2(1q), Cisco NX-OS Software 10.2(2), Cisco NX-OS Software 10.2(3), Cisco NX-OS Software 10.2(2a), Cisco NX-OS Software 10.2(3t), and 43 more

  • Cisco Nexus Dashboard Insights Arbitrary File Write Vulnerability

    Medium · CVSS 4.9
    CVE-2026-20174Published Apr 1, 2026cisco-sa-ndi-afw-rJuRC5dZ

    Affected: Cisco Nexus Dashboard , Cisco Nexus Dashboard Insights

  • Cisco Nexus Dashboard and Nexus Dashboard Insights Server-Side Request Forgery Vulnerability

    Medium · CVSS 6.1
    CVE-2026-20041Published Apr 1, 2026cisco-sa-nd-ssrf-NAen4O7r

    Affected: Cisco Nexus Dashboard , Cisco Nexus Dashboard Insights

  • Cisco Nexus Dashboard Configuration Backup REST API Unauthorized Access Vulnerability

    Medium · CVSS 6.5
    CVE-2026-20042Published Apr 1, 2026cisco-sa-nd-cbid-5YqkOSHu

    Affected: Cisco Nexus Dashboard

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Frequently asked questions

What are the latest Cisco NX-OS / Nexus security advisories?

This page lists recent Cisco security advisories affecting Cisco NX-OS / Nexus, from the Cisco PSIRT openVuln feed, with severity, CVSS, and CVEs. Confirm the affected software versions against what you run.

How do I fix a Cisco NX-OS / Nexus vulnerability?

Most Cisco vulnerabilities are fixed by upgrading to a patched software release or applying the documented mitigation. If the platform is end-of-life, the remedy is a refresh. Uniqcli, an authorized Cisco partner, scopes the patch or replacement and can quote it TAA-compliant and GPC-payable.

Is Cisco NX-OS / Nexus still supported?

Security fixes are only available while a product is supported. Check our Cisco end-of-life lookup to confirm the Last Date of Support, then patch (if supported) or plan a refresh with Uniqcli.

Data from the Cisco PSIRT openVuln API, shown for reference; Cisco’s official advisories are authoritative. Cisco and PSIRT are trademarks of Cisco Systems, Inc.; Uniqcli LLC is an independent authorized Cisco partner.