{"cve":"CVE-2022-20824","nvd":{"published":"2022-08-25T19:15:08.217","modified":"2026-06-17T04:25:11.583","status":"Modified","description":"A vulnerability in the Cisco Discovery Protocol feature of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code with root privileges or cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper input validation of specific values that are within a Cisco Discovery Protocol message. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to execute arbitrary code with root privileges or cause the Cisco Discovery Protocol process to crash and restart multiple times, which would cause the affected device to reload, resulting in a DoS condition. Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-787","CWE-121"],"references":["https://security.netapp.com/advisory/ntap-20220923-0001/","https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-cdp-dos-ce-wWvPucC9","https://security.netapp.com/advisory/ntap-20220923-0001/","https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-cdp-dos-ce-wWvPucC9"],"products":["cisco:mds_9506_firmware","cisco:mds_9513_firmware","cisco:mds_9706_firmware","cisco:mds_9710_firmware","cisco:mds_9718_firmware","cisco:nexus_1000v_firmware","cisco:nexus_3016_firmware","cisco:nexus_3016q_firmware","cisco:nexus_3048_firmware","cisco:nexus_3064-32t_firmware","cisco:nexus_3064-t_firmware","cisco:nexus_3064-x_firmware","cisco:nexus_3064_firmware","cisco:nexus_3064t_firmware","cisco:nexus_3064x_firmware","cisco:nexus_3100-v_firmware","cisco:nexus_3100-z_firmware","cisco:nexus_3100_firmware","cisco:nexus_3100v_firmware","cisco:nexus_31108pc-v_firmware","cisco:nexus_31108pv-v_firmware","cisco:nexus_31108tc-v_firmware","cisco:nexus_31128pq_firmware","cisco:nexus_3132c-z_firmware","cisco:nexus_3132q-v_firmware","cisco:nexus_3132q-x\\/3132q-xl_firmware","cisco:nexus_3132q-x_firmware","cisco:nexus_3132q-xl_firmware","cisco:nexus_3132q_firmware","cisco:nexus_3164q_firmware","cisco:nexus_3172_firmware","cisco:nexus_3172pq-xl_firmware","cisco:nexus_3172pq\\/pq-xl_firmware","cisco:nexus_3172pq_firmware","cisco:nexus_3172tq-32t_firmware","cisco:nexus_3172tq-xl_firmware","cisco:nexus_3172tq_firmware","cisco:nexus_3200_firmware","cisco:nexus_3232c__firmware","cisco:nexus_3232c_firmware","cisco:nexus_3264c-e_firmware","cisco:nexus_3264q_firmware","cisco:nexus_3400_firmware","cisco:nexus_3408-s_firmware","cisco:nexus_34180yc_firmware","cisco:nexus_34200yc-sm_firmware","cisco:nexus_3432d-s_firmware","cisco:nexus_3464c_firmware","cisco:nexus_3524-x\\/xl_firmware","cisco:nexus_3524-x_firmware"],"source":"nvd","synced_at":"2026-10-19T21:35:14.992143698+00:00"},"epss":{"cve":"CVE-2022-20824","score":0.00396,"percentile":0.3388,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}