关键信息 Advisory ID: cisco-sa-nxos-cpdos-qLsv6pFD CVE ID: CVE-2026-20033 CWE ID: CWE-805 CVSS Score: 7.4 Severity: High First Published: 2026 February 25 16:00 GMT Affected Products: - Cisco Nexus 9000 Series Fabric Switches in ACI mode with a configured and active OOB management interface. Products Confirmed Not Vulnerable: - Various Cisco products including but not limited to Firepower series, Nexus 7000 Series Switches, and UCS series. Workarounds: No workarounds available. Fixed Software: Cisco recommends upgrading to the fixed software indicated in the advisory. Summary A vulnerability in Cisco Nexus 9000 Series Fabric Switches in ACI mode could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device, specifically through the out-of-band (OOB) management interface.