{"cve":"CVE-2022-20823","nvd":{"published":"2022-08-25T19:15:08.147","modified":"2026-06-17T04:25:11.340","status":"Modified","description":"A vulnerability in the OSPF version 3 (OSPFv3) feature 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 incomplete input validation of specific OSPFv3 packets. An attacker could exploit this vulnerability by sending a malicious OSPFv3 link-state advertisement (LSA) to an affected device. A successful exploit could allow the attacker to cause the OSPFv3 process to crash and restart multiple times, causing the affected device to reload and resulting in a DoS condition. Note: The OSPFv3 feature is disabled by default. To exploit this vulnerability, an attacker must be able to establish a full OSPFv3 neighbor state with an affected device. For more information about exploitation conditions, see the Details section of this advisory.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","score":8.6},"cwes":["CWE-125","CWE-126"],"references":["https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ospfv3-dos-48qutcu","https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ospfv3-dos-48qutcu"],"products":["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_3500_firmware","cisco:nexus_3500_platform_firmware","cisco:nexus_3524-x\\/xl_firmware","cisco:nexus_3524-x_firmware","cisco:nexus_3524-xl_firmware","cisco:nexus_3524_firmware","cisco:nexus_3548-x\\/xl_firmware","cisco:nexus_3548-x_firmware"],"source":"nvd","synced_at":"2026-10-19T21:35:14.992143698+00:00"},"epss":{"cve":"CVE-2022-20823","score":0.01124,"percentile":0.66268,"date":"2026-11-01"},"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."]}