CVE-2025-5089

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-5089", "assignerOrgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7", "state": "PUBLISHED", "assignerShortName": "Arista", "dateReserved": "2025-05-22T16:26:45.461Z", "datePublished": "2026-06-05T15:44:45.822Z", "dateUpdated": "2026-06-09T15:14:08.353Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7", "shortName": "Arista", "dateUpdated": "2026-06-05T15:44:45.822Z"}, "title": "Arista EOS SysDB Agent Denial of Service via Malformed CVX Client/Server Messages", "datePublic": "2025-12-18T16:40:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-20", "description": "CWE-20: Improper Input Validation", "type": "CWE"}]}], "affected": [{"vendor": "Arista Networks", "product": "EOS / CloudVision eXchange (CVX)", "platforms": ["CloudVision eXchange", "virtual or physical appliance"], "versions": [{"status": "affected", "version": "4.34.0F", "lessThanOrEqual": "4.34.1F", "versionType": "custom"}, {"status": "affected", "version": "4.33.0M", "lessThanOrEqual": "4.33.4M", "versionType": "custom"}, {"status": "affected", "version": "4.32.0M", "lessThanOrEqual": "4.32.6M", "versionType": "custom"}, {"status": "affected", "version": "4.31.0M", "lessThanOrEqual": "4.31.8M", "versionType": "custom"}, {"status": "affected", "version": "4.30.0", "lessThan": "4.31.0", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "In a CVX cluster, an EOS switch connected to a CVX server is not resilient to certain malformed messages received from the connected CVX server. Similarly, the CVX server is not resilient to certain malformed messages received from the connected EOS switch. This leads to either a Sysdb agent crash on the EOS device causing a soft reset of the switch or agent crashes on the CVX server causing instability of the CVX cluster. An attacker could use this behavior to create a denial of service (DoS) scenario. Note that this would require the attacker to already have a high privilege access to the connected device to be able to send custom TCP packets. EOS switches that are not connected to a CVX server are not impacted.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>In a CVX cluster, an EOS switch connected to a CVX server is not resilient to certain malformed messages received from the connected CVX server. Similarly, the CVX server is not resilient to certain malformed messages received from the connected EOS switch. This leads to either a Sysdb agent crash on the EOS device causing a soft reset of the switch or agent crashes on the CVX server causing instability of the CVX cluster. An attacker could use this behavior to create a denial of service (DoS) scenario. Note that this would require the attacker to already have a high privilege access to the connected device to be able to send custom TCP packets. EOS switches that are not connected to a CVX server are not impacted.</p>"}]}], "references": [{"url": "https://www.arista.com/en/support/advisories-notices/security-advisory/22868-security-advisory-0126", "tags": ["vendor-advisory"]}], "configurations": [{"lang": "en", "value": "In order to be vulnerable to CVE-2025-5089, the following condition must be met: CVX must be configured:\n\n\n\n\ncvx1#show cvx\n Status: Enabled\n Mode: Standalone\n Heartbeat interval: 20.0\n Heartbeat timeout: 60.0\n Client connection state preserving: Disabled\n \ncvx1#show running-config section cvx\ncvx\n no shutdown", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>In order to be vulnerable to CVE-2025-5089, the following condition must be met: CVX must be configured:</p>\n<pre><code>cvx1#show cvx\n Status: Enabled\n Mode: Standalone\n Heartbeat interval: 20.0\n Heartbeat timeout: 60.0\n Client connection state preserving: Disabled\n \ncvx1#show running-config section cvx\ncvx\n no shutdown</code></pre>"}]}], "workarounds": [{"lang": "en", "value": "There is no mitigation for this issue.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>There is no mitigation for this issue.</p>"}]}], "solutions": [{"lang": "en", "value": "The recommended resolution is to upgrade to a remediated software version at your earliest convenience. CVE-2025-5089 has been fixed in the following releases:\n\n\n\n * 4.34.2F and later releases in the 4.34.x train\n\n * 4.33.5M and later releases in the 4.33.x train\n\n * 4.32.7M and later releases in the 4.32.x train\n\n * 4.31.9M and later releases in the 4.31.x train", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>The recommended resolution is to upgrade to a remediated software version at your earliest convenience. CVE-2025-5089 has been fixed in the following releases:</p>\n<ul>\n <li>4.34.2F and later releases in the 4.34.x train</li>\n <li>4.33.5M and later releases in the 4.33.x train</li>\n <li>4.32.7M and later releases in the 4.32.x train</li>\n <li>4.31.9M and later releases in the 4.31.x train</li>\n</ul>"}]}], "source": {"defect": ["BUG1140255"], "advisory": "0126", "discovery": "INTERNAL"}, "x_generator": {"engine": "Vulnogram"}, "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseSeverity": "MEDIUM", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 7.1, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}}], "x_capecAlignment": {"capecId": "CAPEC-125", "capecName": "Flooding / Malformed Packet", "justification": "The attack leverages structurally malformed message payloads communicated over a trusted client/server connection interface to trigger unhandled parser logic, inducing an agent process crash (Denial of Service)."}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-09T14:47:55.021277Z", "id": "CVE-2025-5089", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-09T15:14:08.353Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-5089", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-09T14:47:55.021277Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-09T14:47:58.815Z"}}], "cna": {"title": "Arista EOS SysDB Agent Denial of Service via Malformed CVX Client/Server Messages", "source": {"defect": ["BUG1140255"], "advisory": "0126", "discovery": "INTERNAL"}, "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}, {"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 7.1, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Arista Networks", "product": "EOS / CloudVision eXchange (CVX)", "versions": [{"status": "affected", "version": "4.34.0F", "versionType": "custom", "lessThanOrEqual": "4.34.1F"}, {"status": "affected", "version": "4.33.0M", "versionType": "custom", "lessThanOrEqual": "4.33.4M"}, {"status": "affected", "version": "4.32.0M", "versionType": "custom", "lessThanOrEqual": "4.32.6M"}, {"status": "affected", "version": "4.31.0M", "versionType": "custom", "lessThanOrEqual": "4.31.8M"}, {"status": "affected", "version": "4.30.0", "lessThan": "4.31.0", "versionType": "custom"}], "platforms": ["CloudVision eXchange", "virtual or physical appliance"], "defaultStatus": "unaffected"}], "solutions": [{"lang": "en", "value": "The recommended resolution is to upgrade to a remediated software version at your earliest convenience. CVE-2025-5089 has been fixed in the following releases:\n\n\n\n * 4.34.2F and later releases in the 4.34.x train\n\n * 4.33.5M and later releases in the 4.33.x train\n\n * 4.32.7M and later releases in the 4.32.x train\n\n * 4.31.9M and later releases in the 4.31.x train", "supportingMedia": [{"type": "text/html", "value": "<p>The recommended resolution is to upgrade to a remediated software version at your earliest convenience. CVE-2025-5089 has been fixed in the following releases:</p>\n<ul>\n <li>4.34.2F and later releases in the 4.34.x train</li>\n <li>4.33.5M and later releases in the 4.33.x train</li>\n <li>4.32.7M and later releases in the 4.32.x train</li>\n <li>4.31.9M and later releases in the 4.31.x train</li>\n</ul>", "base64": false}]}], "datePublic": "2025-12-18T16:40:00.000Z", "references": [{"url": "https://www.arista.com/en/support/advisories-notices/security-advisory/22868-security-advisory-0126", "tags": ["vendor-advisory"]}], "workarounds": [{"lang": "en", "value": "There is no mitigation for this issue.", "supportingMedia": [{"type": "text/html", "value": "<p>There is no mitigation for this issue.</p>", "base64": false}]}], "x_generator": {"engine": "Vulnogram"}, "descriptions": [{"lang": "en", "value": "In a CVX cluster, an EOS switch connected to a CVX server is not resilient to certain malformed messages received from the connected CVX server. Similarly, the CVX server is not resilient to certain malformed messages received from the connected EOS switch. This leads to either a Sysdb agent crash on the EOS device causing a soft reset of the switch or agent crashes on the CVX server causing instability of the CVX cluster. An attacker could use this behavior to create a denial of service (DoS) scenario. Note that this would require the attacker to already have a high privilege access to the connected device to be able to send custom TCP packets. EOS switches that are not connected to a CVX server are not impacted.", "supportingMedia": [{"type": "text/html", "value": "<p>In a CVX cluster, an EOS switch connected to a CVX server is not resilient to certain malformed messages received from the connected CVX server. Similarly, the CVX server is not resilient to certain malformed messages received from the connected EOS switch. This leads to either a Sysdb agent crash on the EOS device causing a soft reset of the switch or agent crashes on the CVX server causing instability of the CVX cluster. An attacker could use this behavior to create a denial of service (DoS) scenario. Note that this would require the attacker to already have a high privilege access to the connected device to be able to send custom TCP packets. EOS switches that are not connected to a CVX server are not impacted.</p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-20", "description": "CWE-20: Improper Input Validation"}]}], "configurations": [{"lang": "en", "value": "In order to be vulnerable to CVE-2025-5089, the following condition must be met: CVX must be configured:\n\n\n\n\ncvx1#show cvx\n Status: Enabled\n Mode: Standalone\n Heartbeat interval: 20.0\n Heartbeat timeout: 60.0\n Client connection state preserving: Disabled\n \ncvx1#show running-config section cvx\ncvx\n no shutdown", "supportingMedia": [{"type": "text/html", "value": "<p>In order to be vulnerable to CVE-2025-5089, the following condition must be met: CVX must be configured:</p>\n<pre><code>cvx1#show cvx\n Status: Enabled\n Mode: Standalone\n Heartbeat interval: 20.0\n Heartbeat timeout: 60.0\n Client connection state preserving: Disabled\n \ncvx1#show running-config section cvx\ncvx\n no shutdown</code></pre>", "base64": false}]}], "providerMetadata": {"orgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7", "shortName": "Arista", "dateUpdated": "2026-06-05T15:44:45.822Z"}, "x_capecAlignment": {"capecId": "CAPEC-125", "capecName": "Flooding / Malformed Packet", "justification": "The attack leverages structurally malformed message payloads communicated over a trusted client/server connection interface to trigger unhandled parser logic, inducing an agent process crash (Denial of Service)."}}}, "cveMetadata": {"cveId": "CVE-2025-5089", "state": "PUBLISHED", "dateUpdated": "2026-06-09T15:14:08.353Z", "dateReserved": "2025-05-22T16:26:45.461Z", "assignerOrgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7", "datePublished": "2026-06-05T15:44:45.822Z", "assignerShortName": "Arista"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "platforms": ["CloudVision eXchange", "virtual or physical appliance"], "product": "EOS / CloudVision eXchange (CVX)", "vendor": "Arista Networks", "versions": [{"lessThanOrEqual": "4.34.1F", "status": "affected", "version": "4.34.0F", "versionType": "custom"}, {"lessThanOrEqual": "4.33.4M", "status": "affected", "version": "4.33.0M", "versionType": "custom"}, {"lessThanOrEqual": "4.32.6M", "status": "affected", "version": "4.32.0M", "versionType": "custom"}, {"lessThanOrEqual": "4.31.8M", "status": "affected", "version": "4.31.0M", "versionType": "custom"}, {"lessThan": "4.31.0", "status": "affected", "version": "4.30.0", "versionType": "custom"}]}], "source": "psirt@arista.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In a CVX cluster, an EOS switch connected to a CVX server is not resilient to certain malformed messages received from the connected CVX server. Similarly, the CVX server is not resilient to certain malformed messages received from the connected EOS switch. This leads to either a Sysdb agent crash on the EOS device causing a soft reset of the switch or agent crashes on the CVX server causing instability of the CVX cluster. An attacker could use this behavior to create a denial of service (DoS) scenario. Note that this would require the attacker to already have a high privilege access to the connected device to be able to send custom TCP packets. EOS switches that are not connected to a CVX server are not impacted."}, {"lang": "es", "value": "En un cl\u00faster CVX, un switch EOS conectado a un servidor CVX no es resistente a ciertos mensajes malformados recibidos del servidor CVX conectado. De manera similar, el servidor CVX no es resistente a ciertos mensajes malformados recibidos del switch EOS conectado. Esto conduce a un fallo del agente Sysdb en el dispositivo EOS que causa un reinicio suave del switch o a fallos de agentes en el servidor CVX que causan inestabilidad del cl\u00faster CVX. Un atacante podr\u00eda usar este comportamiento para crear un escenario de denegaci\u00f3n de servicio (DoS). Tenga en cuenta que esto requerir\u00eda que el atacante ya tenga acceso de alto privilegio al dispositivo conectado para poder enviar paquetes TCP personalizados. Los switches EOS que no est\u00e1n conectados a un servidor CVX no se ven afectados."}], "id": "CVE-2025-5089", "lastModified": "2026-10-07T08:10:00.200", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "psirt@arista.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "psirt@arista.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-5089", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-09T14:47:55.021277Z", "version": "2.0.3"}}]}, "published": "2026-06-05T17:16:30.180", "references": [{"source": "psirt@arista.com", "url": "https://www.arista.com/en/support/advisories-notices/security-advisory/22868-security-advisory-0126"}], "sourceIdentifier": "psirt@arista.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "psirt@arista.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": ["cloudvision_exchange", "virtual_or_physical_appliance"], "status": "affected", "versions": {"scheme": "generic", "value": "[4.34.0F,4.34.1F]"}}, {"platform": ["cloudvision_exchange", "virtual_or_physical_appliance"], "status": "affected", "versions": {"scheme": "generic", "value": "[4.33.0M,4.33.4M]"}}, {"platform": ["cloudvision_exchange", "virtual_or_physical_appliance"], "status": "affected", "versions": {"scheme": "generic", "value": "[4.32.0M,4.32.6M]"}}, {"platform": ["cloudvision_exchange", "virtual_or_physical_appliance"], "status": "affected", "versions": {"scheme": "generic", "value": "[4.31.0M,4.31.8M]"}}, {"platform": ["cloudvision_exchange", "virtual_or_physical_appliance"], "status": "affected", "versions": {"scheme": "generic", "value": "[4.30.0,4.31.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "EOS / CloudVision eXchange (CVX)", "source": "cna", "vendor": "Arista Networks"}, "product": "cloudvision_exchange", "vendor": "arista"}], "created": "2026-06-05T18:00:15.443483+00:00", "updated": "2026-06-07T11:16:30.426404+00:00", "vendors": ["arista", "arista$PRODUCT$cloudvision_exchange"]}