CVE-2026-20010

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An attacker could exploit this vulnerability by sending a crafted LLDP packet to an interface of an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition.\r\nNote: LLDP is a Layer 2 link protocol. To exploit this vulnerability, an attacker would need to be directly connected to an interface of an affected device, either physically or logically (for example, through a Layer 2 Tunnel configured to transport the LLDP protocol)."}], "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-n3kn9k_aci_lldp_dos-NdgRrrA3", "name": "cisco-sa-n3kn9k_aci_lldp_dos-NdgRrrA3"}], "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-n3kn9k_aci_lldp_dos-NdgRrrA3", "discovery": "EXTERNAL", "defects": ["CSCwq33193"]}, "problemTypes": [{"descriptions": [{"lang": "en", "description": "Buffer Access with Incorrect Length Value", "type": "cwe", "cweId": "CWE-805"}]}], "affected": [{"vendor": "Cisco", "product": "Cisco NX-OS Software", "versions": [{"version": "10.3(1)", "status": "affected"}, {"version": "10.3(2)", "status": "affected"}, {"version": "10.3(3)", "status": "affected"}, {"version": "10.4(1)", "status": "affected"}, {"version": "10.3(99w)", "status": "affected"}, {"version": "10.3(3w)", "status": "affected"}, {"version": "10.3(99x)", "status": "affected"}, {"version": "10.3(3o)", "status": "affected"}, {"version": "10.3(4)", "status": "affected"}, {"version": "10.3(3p)", "status": "affected"}, {"version": "10.3(4a)", "status": "affected"}, {"version": "10.4(2)", "status": "affected"}, {"version": "10.3(3q)", "status": "affected"}, {"version": "10.3(3x)", "status": "affected"}, {"version": "10.3(4g)", "status": "affected"}, {"version": "10.3(3r)", "status": "affected"}, {"version": "10.3(4h)", "status": "affected"}], "defaultStatus": "unknown"}, {"vendor": "Cisco", "product": "Cisco NX-OS System Software in ACI Mode", "versions": [{"version": "16.0(2h)", "status": "affected"}, {"version": "16.0(2j)", "status": "affected"}, {"version": "16.0(3d)", "status": "affected"}, {"version": "16.0(3e)", "status": "affected"}, {"version": "16.0(4c)", "status": "affected"}, {"version": "16.0(5h)", "status": "affected"}, {"version": "16.0(3g)", "status": "affected"}, {"version": "16.0(5j)", "status": "affected"}, {"version": "16.0(6c)", "status": "affected"}, {"version": "16.1(1f)", "status": "affected"}, {"version": "16.0(7e)", "status": "affected"}, {"version": "16.0(8e)", "status": "affected"}, {"version": "16.0(8f)", "status": "affected"}, {"version": "16.1(2f)", "status": "affected"}, {"version": "16.1(2g)", "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"}], "defaultStatus": "unknown"}, {"vendor": "Cisco", "product": "Cisco Unified Computing System (Managed)", "versions": [{"version": "4.3(4e)", "status": "affected"}, {"version": "4.3(6b)", "status": "affected"}, {"version": "4.3(4c)", "status": "affected"}, {"version": "4.3(4f)", "status": "affected"}, {"version": "4.3(6d)", "status": "affected"}, {"version": "4.3(5e)", "status": "affected"}, {"version": "4.3(4d)", "status": "affected"}, {"version": "4.3(4b)", "status": "affected"}, {"version": "4.3(5a)", "status": "affected"}, {"version": "4.3(5c)", "status": "affected"}, {"version": "4.3(5d)", "status": "affected"}, {"version": "4.3(6c)", "status": "affected"}, {"version": "4.3(6a)", "status": "affected"}], "defaultStatus": "unknown"}], "providerMetadata": {"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco", "dateUpdated": "2026-02-25T16:18:14.561Z"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-20010", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-02-25T18:18:44.628066Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-02-25T19:05:49.108Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-20010", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-02-25T18:18:44.628066Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-02-25T18:17:50.280Z"}}], "cna": {"title": "Cisco Nexus 3000 and 9000 Series Switches Link Layer Discovery Protocol Denial of Service Vulnerability", "source": {"defects": ["CSCwq33193"], "advisory": "cisco-sa-n3kn9k_aci_lldp_dos-NdgRrrA3", "discovery": "EXTERNAL"}, "metrics": [{"format": "cvssV3_1", "cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.4, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}], "affected": [{"vendor": "Cisco", "product": "Cisco NX-OS Software", "versions": [{"status": "affected", "version": "10.3(1)"}, {"status": "affected", "version": "10.3(2)"}, {"status": "affected", "version": "10.3(3)"}, {"status": "affected", "version": "10.4(1)"}, {"status": "affected", "version": "10.3(99w)"}, {"status": "affected", "version": "10.3(3w)"}, {"status": "affected", "version": "10.3(99x)"}, {"status": "affected", "version": "10.3(3o)"}, {"status": "affected", "version": "10.3(4)"}, {"status": "affected", "version": "10.3(3p)"}, {"status": "affected", "version": "10.3(4a)"}, {"status": "affected", "version": "10.4(2)"}, {"status": "affected", "version": "10.3(3q)"}, {"status": "affected", "version": "10.3(3x)"}, {"status": "affected", "version": "10.3(4g)"}, {"status": "affected", "version": "10.3(3r)"}, {"status": "affected", "version": "10.3(4h)"}], "defaultStatus": "unknown"}, {"vendor": "Cisco", "product": "Cisco NX-OS System Software in ACI Mode", "versions": [{"status": "affected", "version": "16.0(2h)"}, {"status": "affected", "version": "16.0(2j)"}, {"status": "affected", "version": "16.0(3d)"}, {"status": "affected", "version": "16.0(3e)"}, {"status": "affected", "version": "16.0(4c)"}, {"status": "affected", "version": "16.0(5h)"}, {"status": "affected", "version": "16.0(3g)"}, {"status": "affected", "version": "16.0(5j)"}, {"status": "affected", "version": "16.0(6c)"}, {"status": "affected", "version": "16.1(1f)"}, {"status": "affected", "version": "16.0(7e)"}, {"status": "affected", "version": "16.0(8e)"}, {"status": "affected", "version": "16.0(8f)"}, {"status": "affected", "version": "16.1(2f)"}, {"status": "affected", "version": "16.1(2g)"}, {"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)"}], "defaultStatus": "unknown"}, {"vendor": "Cisco", "product": "Cisco Unified Computing System (Managed)", "versions": [{"status": "affected", "version": "4.3(4e)"}, {"status": "affected", "version": "4.3(6b)"}, {"status": "affected", "version": "4.3(4c)"}, {"status": "affected", "version": "4.3(4f)"}, {"status": "affected", "version": "4.3(6d)"}, {"status": "affected", "version": "4.3(5e)"}, {"status": "affected", "version": "4.3(4d)"}, {"status": "affected", "version": "4.3(4b)"}, {"status": "affected", "version": "4.3(5a)"}, {"status": "affected", "version": "4.3(5c)"}, {"status": "affected", "version": "4.3(5d)"}, {"status": "affected", "version": "4.3(6c)"}, {"status": "affected", "version": "4.3(6a)"}], "defaultStatus": "unknown"}], "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."}], "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-n3kn9k_aci_lldp_dos-NdgRrrA3", "name": "cisco-sa-n3kn9k_aci_lldp_dos-NdgRrrA3"}], "descriptions": [{"lang": "en", "value": "A vulnerability in the Link Layer Discovery Protocol (LLDP) feature of Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause the LLDP process to restart, which could cause an affected device to reload unexpectedly.\r\n\r\nThis vulnerability is due to improper handling of specific fields in an LLDP frame. An attacker could exploit this vulnerability by sending a crafted LLDP packet to an interface of an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition.\r\nNote: LLDP is a Layer 2 link protocol. To exploit this vulnerability, an attacker would need to be directly connected to an interface of an affected device, either physically or logically (for example, through a Layer 2 Tunnel configured to transport the LLDP protocol)."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "cwe", "cweId": "CWE-805", "description": "Buffer Access with Incorrect Length Value"}]}], "providerMetadata": {"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco", "dateUpdated": "2026-02-25T16:18:14.561Z"}}}, "cveMetadata": {"cveId": "CVE-2026-20010", "state": "PUBLISHED", "dateUpdated": "2026-02-25T19:05:49.108Z", "dateReserved": "2025-10-08T11:59:15.350Z", "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "datePublished": "2026-02-25T16:18:14.561Z", "assignerShortName": "cisco"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unknown", "product": "Cisco NX-OS Software", "vendor": "Cisco", "versions": [{"status": "affected", "version": "10.3(1)"}, {"status": "affected", "version": "10.3(2)"}, {"status": "affected", "version": "10.3(3)"}, {"status": "affected", "version": "10.4(1)"}, {"status": "affected", "version": "10.3(99w)"}, {"status": "affected", "version": "10.3(3w)"}, {"status": "affected", "version": "10.3(99x)"}, {"status": "affected", "version": "10.3(3o)"}, {"status": "affected", "version": "10.3(4)"}, {"status": "affected", "version": "10.3(3p)"}, {"status": "affected", "version": "10.3(4a)"}, {"status": "affected", "version": "10.4(2)"}, {"status": "affected", "version": "10.3(3q)"}, {"status": "affected", "version": "10.3(3x)"}, {"status": "affected", "version": "10.3(4g)"}, {"status": "affected", "version": "10.3(3r)"}, {"status": "affected", "version": "10.3(4h)"}]}, {"defaultStatus": "unknown", "product": "Cisco NX-OS System Software in ACI Mode", "vendor": "Cisco", "versions": [{"status": "affected", "version": "16.0(2h)"}, {"status": "affected", "version": "16.0(2j)"}, {"status": "affected", "version": "16.0(3d)"}, {"status": "affected", "version": "16.0(3e)"}, {"status": "affected", "version": "16.0(4c)"}, {"status": "affected", "version": "16.0(5h)"}, {"status": "affected", "version": "16.0(3g)"}, {"status": "affected", "version": "16.0(5j)"}, {"status": "affected", "version": "16.0(6c)"}, {"status": "affected", "version": "16.1(1f)"}, {"status": "affected", "version": "16.0(7e)"}, {"status": "affected", "version": "16.0(8e)"}, {"status": "affected", "version": "16.0(8f)"}, {"status": "affected", "version": "16.1(2f)"}, {"status": "affected", "version": "16.1(2g)"}, {"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)"}]}, {"defaultStatus": "unknown", "product": "Cisco Unified Computing System (Managed)", "vendor": "Cisco", "versions": [{"status": "affected", "version": "4.3(4e)"}, {"status": "affected", "version": "4.3(6b)"}, {"status": "affected", "version": "4.3(4c)"}, {"status": "affected", "version": "4.3(4f)"}, {"status": "affected", "version": "4.3(6d)"}, {"status": "affected", "version": "4.3(5e)"}, {"status": "affected", "version": "4.3(4d)"}, {"status": "affected", "version": "4.3(4b)"}, {"status": "affected", "version": "4.3(5a)"}, {"status": "affected", "version": "4.3(5c)"}, {"status": "affected", "version": "4.3(5d)"}, {"status": "affected", "version": "4.3(6c)"}, {"status": "affected", "version": "4.3(6a)"}]}], "source": "psirt@cisco.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability in the Link Layer Discovery Protocol (LLDP) feature of Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause the LLDP process to restart, which could cause an affected device to reload unexpectedly.\r\n\r\nThis vulnerability is due to improper handling of specific fields in an LLDP frame. An attacker could exploit this vulnerability by sending a crafted LLDP packet to an interface of an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition.\r\nNote: LLDP is a Layer 2 link protocol. To exploit this vulnerability, an attacker would need to be directly connected to an interface of an affected device, either physically or logically (for example, through a Layer 2 Tunnel configured to transport the LLDP protocol)."}, {"lang": "es", "value": "Una vulnerabilidad en la funci\u00f3n del Protocolo de Descubrimiento de Capa de Enlace (LLDP) del software Cisco NX-OS podr\u00eda permitir a un atacante adyacente no autenticado provocar el reinicio del proceso LLDP, lo que podr\u00eda causar que un dispositivo afectado se recargue inesperadamente.\n\nEsta vulnerabilidad se debe al manejo inadecuado de campos espec\u00edficos en una trama LLDP. Un atacante podr\u00eda explotar esta vulnerabilidad enviando un paquete LLDP manipulado a una interfaz de un dispositivo afectado. Un exploit exitoso podr\u00eda permitir al atacante provocar la recarga del dispositivo, lo que resultar\u00eda en una condici\u00f3n de denegaci\u00f3n de servicio (DoS).\nNota: LLDP es un protocolo de enlace de Capa 2. Para explotar esta vulnerabilidad, un atacante necesitar\u00eda estar directamente conectado a una interfaz de un dispositivo afectado, ya sea f\u00edsica o l\u00f3gicamente (por ejemplo, a trav\u00e9s de un t\u00fanel de Capa 2 configurado para transportar el protocolo LLDP)."}], "id": "CVE-2026-20010", "lastModified": "2026-06-17T10:16:52.597", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.0, "source": "psirt@cisco.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-20010", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-02-25T18:18:44.628066Z", "version": "2.0.3"}}]}, "published": "2026-02-25T17:25:24.110", "references": [{"source": "psirt@cisco.com", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-n3kn9k_aci_lldp_dos-NdgRrrA3"}], "sourceIdentifier": "psirt@cisco.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-805"}], "source": "psirt@cisco.com", "type": "Secondary"}]}

{}

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"10.3(3p)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "10.3(4a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "10.4(2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "10.3(3q)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "10.3(3x)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "10.3(4g)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "10.3(3r)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "10.3(4h)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "Cisco NX-OS Software", "source": "cna", "vendor": "Cisco"}, "product": "nx-os_software", "vendor": "cisco"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "16.0(2h)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "16.0(2j)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "16.0(3d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "16.0(3e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "16.0(4c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "16.0(5h)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "16.0(3g)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "16.0(5j)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "16.0(6c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "16.1(1f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "16.0(7e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "16.0(8e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "16.0(8f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "16.1(2f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "16.1(2g)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "16.0(9c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "16.1(3f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "16.0(9d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "16.0(6h)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "16.0(8h)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "16.1(3g)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "Cisco NX-OS System Software in ACI Mode", "source": "cna", "vendor": "Cisco"}, "product": "nx-os_system_software_in_aci_mode", "vendor": "cisco"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.3(4e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.3(6b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.3(4c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.3(4f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.3(6d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.3(5e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.3(4d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.3(4b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.3(5a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.3(5c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.3(5d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.3(6c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.3(6a)"}}], "enrichment": {"confidence": 89.0, "confidence_source": "matching", "scores": [{"score": 89.0, "source": "matching"}]}, "original": {"product": "Cisco Unified Computing System (Managed)", "source": "cna", "vendor": "Cisco"}, "product": "unified_computing_system_manager", "vendor": "cisco"}], "analysis": {"en": {"generated_at": "2026-04-17T15:08:22.949670+00:00", "value": {"mitigation_remediation": ["Apply the latest Cisco NX\u2011OS firmware update that resolves the LLDP memory\u2011corruption bug.", "Disable LLDP on interfaces that do not require it or limit LLDP traffic to trusted VLANs and ports.", "Segregate critical devices into protected VLANs or separate physical segments to prevent unauthorized Layer\u20112 connectivity."], "summary": {"action": "Immediate Patch", "impact": "Denial of Service via device reload"}, "threat_synthesis": {"affected_systems": "The flaw affects Cisco NX\u2011OS Software, Cisco NX\u2011OS System Software in ACI Mode, and Cisco Unified Computing System (Managed) on Cisco Nexus 3000 and 9000 Series Switches. No specific version ranges are provided in the advisory, so all revisions of these product lines are potentially vulnerable.", "description_and_impact": "The vulnerability originates from the Link Layer Discovery Protocol implementation in Cisco NX\u2011OS. Improper handling of specific fields in an LLDP frame can cause the LLDP process to crash and restart, which in turn forces the entire device to reload. This results in a denial of service condition that can interrupt network services and affect all devices connected to the affected switch.", "risk_and_exploitability": "The CVSS score of 7.4 places the vulnerability in the high severity range, but the EPSS score of less than 1% suggests low exploitation probability under normal circumstances. The vulnerability is not listed in the CISA KEV catalog. An attacker must be directly connected to an adjacent Layer\u20112 interface, either physically or through a Layer\u20112 tunnel, to send a crafted LLDP packet that triggers the device reload. Once the attacker has such proximity, the impact is complete denial of service for the affected device and the network segments it serves."}}}}, "created": "2026-02-26T13:15:30.388585+00:00", "updated": "2026-04-17T15:15:21.847654+00:00", "vendors": ["cisco", "cisco$PRODUCT$nx-os_software", "cisco$PRODUCT$nx-os_system_software_in_aci_mode", "cisco$PRODUCT$unified_computing_system_manager"]}