{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-121295",
        "assignerOrgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7",
        "state": "PUBLISHED",
        "assignerShortName": "Arista",
        "dateReserved": "2026-11-03T11:21:01.892Z",
        "datePublished": "2026-11-10T20:09:59.572Z",
        "dateUpdated": "2026-11-10T20:09:59.572Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7",
                "shortName": "Arista",
                "dateUpdated": "2026-11-10T20:09:59.572Z"
            },
            "title": "Security Advisory 0223",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "On affected platforms running Arista EOS configured as S-BFD peers, an unauthenticated attacker could send a crafted S-BFD PDU to an initiator device. This crafted PDU could cause the kernel on the initiator device to crash, resulting in an unexpected device reboot."
                }
            ],
            "affected": [
                {
                    "vendor": "Arista Networks",
                    "product": "EOS",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "4.36.0F",
                            "status": "affected",
                            "versionType": "custom",
                            "lessThanOrEqual": "4.36.2F"
                        },
                        {
                            "version": "4.35.0F",
                            "status": "affected",
                            "versionType": "custom",
                            "lessThanOrEqual": "4.35.6M"
                        },
                        {
                            "version": "4.34.0F",
                            "status": "affected",
                            "versionType": "custom",
                            "lessThanOrEqual": "4.34.8M"
                        },
                        {
                            "version": "4.33.0F",
                            "status": "affected",
                            "versionType": "custom",
                            "lessThanOrEqual": "4.33.10M"
                        },
                        {
                            "version": "4.32.0F",
                            "status": "affected",
                            "versionType": "custom",
                            "lessThan": "4.33.0F"
                        },
                        {
                            "version": "1.0.0",
                            "status": "affected",
                            "versionType": "custom",
                            "lessThan": "4.32.0F"
                        }
                    ],
                    "platforms": [
                        "710 Series",
                        "720D Series",
                        "720XP/722XPM Series",
                        "750X Series",
                        "7010TX Series",
                        "7020R/R4 Series",
                        "7280R/R2/R3/R4 Series",
                        "7500R/R2/R3 Series",
                        "7800R3/R4 Series",
                        "7700R4 Series",
                        "CloudEOS",
                        "cEOS-lab",
                        "vEOS-lab",
                        "CloudVision eXchange, virtual or physical appliance"
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
                        "baseScore": 8.6,
                        "baseSeverity": "HIGH"
                    }
                },
                {
                    "cvssV4_0": {
                        "version": "4.0",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H",
                        "baseScore": 9.2,
                        "baseSeverity": "CRITICAL"
                    }
                }
            ],
            "references": [
                {
                    "url": "https://www.arista.com/en/support/advisories-notices/security-advisory/25045-security-advisory-0223",
                    "tags": [
                        "vendor-advisory"
                    ]
                }
            ],
            "source": {
                "defects": [
                    "1966375"
                ],
                "advisory": "Security Advisory 0223",
                "discovery": "INTERNAL"
            },
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "type": "CWE",
                            "cweId": "CWE-1284",
                            "description": "CWE-1284 Improper Validation of Specified Quantity in Input"
                        }
                    ]
                }
            ],
            "configurations": [
                {
                    "lang": "en",
                    "value": "CVE-2026-121294:\nswitch#show running-config section sbfd\nrouter bfd\n   sbfd\n      reflector local-discriminator <DISC> proxy\n\nCVE-2026-121295:\nswitch#show running-config section sbfd\nrouter bfd\n   sbfd\n      initiator measurement delay round-trip",
                    "supportingMedia": [
                        {
                            "base64": false,
                            "type": "text/html",
                            "value": "<pre>CVE-2026-121294:\nswitch#show running-config section sbfd\nrouter bfd\n   sbfd\n      reflector local-discriminator <DISC> proxy\n\nCVE-2026-121295:\nswitch#show running-config section sbfd\nrouter bfd\n   sbfd\n      initiator measurement delay round-trip</pre>"
                        }
                    ]
                }
            ],
            "impacts": [
                {
                    "capecId": "CAPEC-100",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "CAPEC-100 Overflow Buffers"
                        }
                    ]
                }
            ]
        }
    }
}