{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-20048",
        "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "state": "PUBLISHED",
        "assignerShortName": "cisco",
        "dateReserved": "2025-10-08T11:59:15.355Z",
        "datePublished": "2026-02-25T16:26:28.329Z",
        "dateUpdated": "2026-02-25T19:05:48.366Z"
    },
    "containers": {
        "cna": {
            "title": "Cisco NX-OS Software SNMP Denial of Service Vulnerability",
            "metrics": [
                {
                    "format": "cvssV3_1",
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
                        "baseScore": 7.7,
                        "baseSeverity": "HIGH",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "scope": "CHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "HIGH"
                    }
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco Nexus 9000 Series Fabric Switches in ACI mode could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r\nThis vulnerability is due to improper processing when parsing SNMP requests. An attacker could exploit this vulnerability by continuously sending SNMP queries to a specific MIB of an affected device. A successful exploit could allow the attacker to cause a kernel panic on the device, resulting in a reload and a DoS condition.\r\nNote: This vulnerability affects SNMP versions 1, 2c, and 3. To exploit this vulnerability through SNMPv1 or SNMPv2c, the attacker must have a valid read-only SNMP community string for the affected system. To exploit this vulnerability through SNMPv3, the attacker must have valid SNMP user credentials for the affected system."
                }
            ],
            "references": [
                {
                    "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-dsnmp-cNN39Uh",
                    "name": "cisco-sa-nxos-dsnmp-cNN39Uh"
                }
            ],
            "exploits": [
                {
                    "lang": "en",
                    "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
                }
            ],
            "source": {
                "advisory": "cisco-sa-nxos-dsnmp-cNN39Uh",
                "discovery": "EXTERNAL",
                "defects": [
                    "CSCwq57598"
                ]
            },
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Uncontrolled Memory Allocation",
                            "type": "cwe",
                            "cweId": "CWE-789"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "Cisco",
                    "product": "Cisco NX-OS System Software in ACI Mode",
                    "versions": [
                        {
                            "version": "15.2(1g)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(2e)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(2f)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(2g)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(2h)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(3f)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(3e)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(3g)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(4d)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(4e)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(5c)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(5d)",
                            "status": "affected"
                        },
                        {
                            "version": "16.0(1g)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(5e)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(4f)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(6e)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(6h)",
                            "status": "affected"
                        },
                        {
                            "version": "16.0(1j)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(6g)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(7f)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(7g)",
                            "status": "affected"
                        },
                        {
                            "version": "16.0(2h)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(8d)",
                            "status": "affected"
                        },
                        {
                            "version": "16.0(2j)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(8e)",
                            "status": "affected"
                        },
                        {
                            "version": "16.0(3d)",
                            "status": "affected"
                        },
                        {
                            "version": "16.0(3e)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(8f)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(8g)",
                            "status": "affected"
                        },
                        {
                            "version": "15.3(1d)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(8h)",
                            "status": "affected"
                        },
                        {
                            "version": "16.0(4c)",
                            "status": "affected"
                        },
                        {
                            "version": "15.3(2a)",
                            "status": "affected"
                        },
                        {
                            "version": "15.2(8i)",
                            "status": "affected"
                        },
                        {
                            "version": "16.0(5h)",
                            "status": "affected"
                        },
                        {
                            "version": "15.3(2b)",
                            "status": "affected"
                        },
                        {
                            "version": "16.0(3g)",
                            "status": "affected"
                        },
                        {
                            "version": "16.0(5j)",
                            "status": "affected"
                        },
                        {
                            "version": "15.3(2c)",
                            "status": "affected"
                        },
                        {
                            "version": "16.0(6c)",
                            "status": "affected"
                        },
                        {
                            "version": "15.3(2d)",
                            "status": "affected"
                        },
                        {
                            "version": "16.1(1f)",
                            "status": "affected"
                        },
                        {
                            "version": "16.0(7e)",
                            "status": "affected"
                        },
                        {
                            "version": "16.0(8e)",
                            "status": "affected"
                        },
                        {
                            "version": "15.3(2e)",
                            "status": "affected"
                        },
                        {
                            "version": "16.0(8f)",
                            "status": "affected"
                        },
                        {
                            "version": "16.1(2f)",
                            "status": "affected"
                        },
                        {
                            "version": "16.1(2g)",
                            "status": "affected"
                        },
                        {
                            "version": "15.3(2f)",
                            "status": "affected"
                        },
                        {
                            "version": "16.0(9c)",
                            "status": "affected"
                        },
                        {
                            "version": "16.1(3f)",
                            "status": "affected"
                        },
                        {
                            "version": "16.0(9d)",
                            "status": "affected"
                        },
                        {
                            "version": "16.0(6h)",
                            "status": "affected"
                        },
                        {
                            "version": "16.0(8h)",
                            "status": "affected"
                        },
                        {
                            "version": "16.1(3g)",
                            "status": "affected"
                        },
                        {
                            "version": "16.0(9e)",
                            "status": "affected"
                        },
                        {
                            "version": "16.1(4h)",
                            "status": "affected"
                        }
                    ],
                    "defaultStatus": "unknown"
                }
            ],
            "providerMetadata": {
                "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
                "shortName": "cisco",
                "dateUpdated": "2026-02-25T16:26:28.329Z"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2026-20048",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "version": "2.0.3",
                                "timestamp": "2026-02-25T18:18:11.351419Z"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-02-25T19:05:48.366Z"
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}