{"api_version":"1","generated_at":"2026-06-21T05:01:30+00:00","cve":"CVE-2025-5090","urls":{"html":"https://cve.report/CVE-2025-5090","api":"https://cve.report/api/cve/CVE-2025-5090.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2025-5090","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-5090"},"summary":{"title":"Arista CloudVision Exchange Cluster Instability via Unexpected Switch Messages","description":"CVX is not resilient to unexpected messages from a connected switch. This leads to agent crashes on CVX causing instability in the CVX cluster. An attacker could use this behavior to create a denial of service (DoS) scenario. 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CVE-2025-5090 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","time":"","lang":"en"}],"workarounds":[{"source":"CNA","title":"","value":"There is no mitigation for this issue.","time":"","lang":"en"}],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2025","cve_id":"5090","cve":"CVE-2025-5090","epss":"0.000490000","percentile":"0.156880000","score_date":"2026-06-11","updated_at":"2026-06-12 00:07:15"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"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"},{"lessThan":"4.32.0","status":"affected","version":"4.31.0","versionType":"custom"},{"lessThan":"4.31.0","status":"affected","version":"4.30.0","versionType":"custom"}]}],"configurations":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"

In order to be vulnerable to CVE-2025-5090, the following condition must be met: CVX must be configured:

\n
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
"}],"value":"In order to be vulnerable to CVE-2025-5090, 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"}],"datePublic":"2025-11-18T16:46:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"

CVX is not resilient to unexpected messages from a connected switch. This leads to agent crashes on CVX causing instability in 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 have a high privilege access to the connected switch to be able to send custom TCP packets to the CVX.

"}],"value":"CVX is not resilient to unexpected messages from a connected switch. This leads to agent crashes on CVX causing instability in 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 have a high privilege access to the connected switch to be able to send custom TCP packets to the CVX."}],"metrics":[{"cvssV3_1":{"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"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]},{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":7.1,"baseSeverity":"HIGH","exploitMaturity":"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","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-20","description":"CWE-20: Improper Input Validation","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-06-05T15:49:27.770Z","orgId":"c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7","shortName":"Arista"},"references":[{"tags":["vendor-advisory"],"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/22868-security-advisory-0126"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"

The recommended resolution is to upgrade to a remediated software version at your earliest convenience. CVE-2025-5090 has been fixed in the following releases:

\n"}],"value":"The recommended resolution is to upgrade to a remediated software version at your earliest convenience. CVE-2025-5090 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"}],"source":{"advisory":"0126","defect":["BUG1139764"],"discovery":"INTERNAL"},"title":"Arista CloudVision Exchange Cluster Instability via Unexpected Switch Messages","workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"

There is no mitigation for this issue.

"}],"value":"There is no mitigation for this issue."}],"x_capecAlignment":{"capecId":"CAPEC-125","capecName":"Flooding / Malformed Packet","justification":"An attacker with high privilege access over a downstream switch can emit unexpected or malformed TCP packets causing state management code on CVX (ControllerOob/Controllerdb) to throw unhandled faults, leading to ongoing client deregistration cycles and cluster instability."},"x_generator":{"engine":"Vulnogram"}}},"cveMetadata":{"assignerOrgId":"c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7","assignerShortName":"Arista","cveId":"CVE-2025-5090","datePublished":"2026-06-05T15:49:27.770Z","dateReserved":"2025-05-22T16:26:48.444Z","dateUpdated":"2026-06-05T15:49:27.770Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-05 17:16:30","lastModifiedDate":"2026-06-05 19:03:48","problem_types":["CWE-20","CWE-20 CWE-20: Improper Input Validation"],"metrics":{"cvssMetricV40":[{"source":"psirt@arista.com","type":"Secondary","cvssData":{"version":"4.0","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","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"psirt@arista.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":3.6}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2025","CveId":"5090","Ordinal":"1","Title":"Arista CloudVision Exchange Cluster Instability via Unexpected S","CVE":"CVE-2025-5090","Year":"2025"},"notes":[{"CveYear":"2025","CveId":"5090","Ordinal":"1","NoteData":"CVX is not resilient to unexpected messages from a connected switch. This leads to agent crashes on CVX causing instability in 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 have a high privilege access to the connected switch to be able to send custom TCP packets to the CVX.","Type":"Description","Title":"Arista CloudVision Exchange Cluster Instability via Unexpected S"}]}}}