{"id":"CVE-2026-73464","state":"PUBLISHED","title":"Security Advisory 0166","description":"On affected platforms running Arista EOS with gRPC Network Management Interface (gNMI) enabled, a specially crafted request could allow a malicious authenticated client with gRPC Network Management Interface (gNMI) access to execute arbitrary code with root privileges on the switch.","publishedAt":"2026-09-16T08:32:54.304Z","updatedAt":"2026-09-17T03:56:52.621Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"Arista"},"assigner":"Arista","products":["Arista Networks EOS"],"affected":[{"vendor":"Arista Networks","product":"EOS","defaultStatus":"unaffected","versions":[{"version":"4.29.0F","status":"affected","lessThan":"4.30.0F","versionType":"custom"},{"version":"4.30.0F","status":"affected","lessThan":"4.31.0F","versionType":"custom"},{"version":"4.31.0F","status":"affected","lessThan":"4.32.0F","versionType":"custom"},{"version":"4.32.0F","status":"affected","lessThan":"4.33.0F","versionType":"custom"},{"version":"4.33.0F","status":"affected","lessThanOrEqual":"4.33.8M","versionType":"custom"},{"version":"4.34.0F","status":"affected","lessThanOrEqual":"4.34.7M","versionType":"custom"},{"version":"4.35.0F","status":"affected","lessThanOrEqual":"4.35.5M","versionType":"custom"},{"version":"4.36.0F","status":"affected","lessThanOrEqual":"4.36.0.1F","versionType":"custom"}],"platforms":["710 Series","720D Series","720XP/722XPM Series","750X Series","7010TX Series","7020R/R4 Series","7130 Series (EOS)","7170 Series","7050X3/X4 Series","7060X/X2/X4/X5/X6 Series","7260X/X3 Series","7280R/R2/R3/R4 Series","7300X/X3 Series","7320X Series","7358X4 Series","7368X4 Series","7388X5 Series","7500R/R2/R3 Series","7800R3/R4 Series","7700R4 Series","AWE 5000 Series","AWE 7200R Series","CloudEOS","cEOS-lab","vEOS-lab","CloudVision eXchange, virtual or physical appliance"]}],"references":["https://www.arista.com/en/support/advisories-notices/security-advisory/24722-security-advisory-0166"],"weaknesses":["CWE-94"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/73xxx/CVE-2026-73464.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-73464","state":"PUBLISHED","datePublished":"2026-09-16T08:32:54.304Z","dateUpdated":"2026-09-17T03:56:52.621Z","assignerShortName":"Arista","assignerOrgId":"c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7","dateReserved":"2026-08-12T16:45:03.511Z"},"containers":{"cna":{"title":"Security Advisory 0166","descriptions":[{"lang":"en","value":"On affected platforms running Arista EOS with gRPC Network Management Interface (gNMI) enabled, a specially crafted request could allow a malicious authenticated client with gRPC Network Management Interface (gNMI) access to execute arbitrary code with root privileges on the switch."}],"affected":[{"vendor":"Arista Networks","product":"EOS","defaultStatus":"unaffected","versions":[{"version":"4.29.0F","status":"affected","lessThan":"4.30.0F","versionType":"custom"},{"version":"4.30.0F","status":"affected","lessThan":"4.31.0F","versionType":"custom"},{"version":"4.31.0F","status":"affected","lessThan":"4.32.0F","versionType":"custom"},{"version":"4.32.0F","status":"affected","lessThan":"4.33.0F","versionType":"custom"},{"version":"4.33.0F","status":"affected","lessThanOrEqual":"4.33.8M","versionType":"custom"},{"version":"4.34.0F","status":"affected","lessThanOrEqual":"4.34.7M","versionType":"custom"},{"version":"4.35.0F","status":"affected","lessThanOrEqual":"4.35.5M","versionType":"custom"},{"version":"4.36.0F","status":"affected","lessThanOrEqual":"4.36.0.1F","versionType":"custom"}],"platforms":["710 Series","720D Series","720XP/722XPM Series","750X Series","7010TX Series","7020R/R4 Series","7130 Series (EOS)","7170 Series","7050X3/X4 Series","7060X/X2/X4/X5/X6 Series","7260X/X3 Series","7280R/R2/R3/R4 Series","7300X/X3 Series","7320X Series","7358X4 Series","7368X4 Series","7388X5 Series","7500R/R2/R3 Series","7800R3/R4 Series","7700R4 Series","AWE 5000 Series","AWE 7200R Series","CloudEOS","cEOS-lab","vEOS-lab","CloudVision eXchange, virtual or physical appliance"]}],"references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/24722-security-advisory-0166","name":"Arista Networks Security Advisory 0166","tags":["vendor-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","baseScore":8.7,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-94","type":"CWE","lang":"en","description":"CWE-94 Improper Control of Generation of Code ('Code Injection')"}]}],"providerMetadata":{"shortName":"Arista","orgId":"c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7","dateUpdated":"2026-09-16T08:32:54.304Z"},"datePublic":"2026-09-09T00:00:00.000Z","impacts":[{"capecId":"CAPEC-242","descriptions":[{"lang":"en","value":"CAPEC-242 Code Injection"}]}],"configurations":[{"lang":"en","value":"In order to be vulnerable to CVE-2026-73464, the following condition must be met:\n\ngNMI transport must be enabled:\n\n  switch(config)#show management api gnmi\n  Transport: default\n  Enabled: yes\n  Server: running on port 6030, in default VRF\n  SSL profile: none\n  QoS DSCP: none\n  Connection limit: 100\n  Authorization required: no\n  Accounting requests: no\n  Notification timestamp: last change time\n  Listen addresses: ::\n  Authentication username priority: x509-spiffe, metadata, x509-common-name\n  Config-commands AAA accounting: enabled\n  Config-commands AAA authorization: enabled\n\nIf a gNMI transport is not configured there is no exposure to this issue and the message will look something like:\n\n  switch(config)#show management api gnmi\n  Enabled: no transports enabled","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>In order to be vulnerable to CVE-2026-73464, the following condition must be met:</p><p>gNMI transport must be enabled:</p><pre>\nswitch(config)#show management api gnmi\nTransport: default\nEnabled: yes\nServer: running on port 6030, in default VRF\nSSL profile: none\nQoS DSCP: none\nConnection limit: 100\nAuthorization required: no\nAccounting requests: no\nNotification timestamp: last change time\nListen addresses: ::\nAuthentication username priority: x509-spiffe, metadata, x509-common-name\nConfig-commands AAA accounting: enabled\nConfig-commands AAA authorization: enabled\n</pre><p>If a gNMI transport is not configured there is no exposure to this issue and the message will look something like:</p><pre>\nswitch(config)#show management api gnmi\nEnabled: no transports enabled\n</pre>"}]}],"workarounds":[{"lang":"en","value":"Disable any gNMI transports:\n\n  management api gnmi\n     no transport grpc <name>\n\nDisabling all gNMI transports makes gNMI, gNOI, and gNSI services unavailable. If no RESTCONF or NETCONF transports are configured, the OpenConfig/Octa agent will also stop. CloudVision provisioning via TerminAttr is unaffected. All services resume when a gNMI transport is re-enabled.\n\nNote: This mitigation is not applicable to DMF-managed EOS switches. gNMI transports are enabled by default on these platforms and cannot be disabled.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>Disable any gNMI transports:</p><pre>\nmanagement api gnmi\n   no transport grpc &lt;name&gt;\n</pre><p>Disabling all gNMI transports makes gNMI, gNOI, and gNSI services unavailable. If no RESTCONF or NETCONF transports are configured, the OpenConfig/Octa agent will also stop. CloudVision provisioning via TerminAttr is unaffected. All services resume when a gNMI transport is re-enabled.</p><p>Note: This mitigation is not applicable to DMF-managed EOS switches. gNMI transports are enabled by default on these platforms and cannot be disabled.</p>"}]}],"solutions":[{"lang":"en","value":"The following EOS releases contain the fix for this vulnerability:\n  - 4.33.9M and later releases in the 4.33.x train\n  - 4.34.7.1M and later releases in the 4.34.x train\n  - 4.35.6M and later releases in the 4.35.x train\n  - 4.36.1F and later releases in the 4.36.x train\n\nNo hotfix is available for this vulnerability.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>The following EOS releases contain the fix for this vulnerability:</p><ul><li>4.33.9M and later releases in the 4.33.x train</li><li>4.34.7.1M and later releases in the 4.34.x train</li><li>4.35.6M and later releases in the 4.35.x train</li><li>4.36.1F and later releases in the 4.36.x train</li></ul><p>No hotfix is available for this vulnerability.</p>"}]}],"source":{"defects":["BUG 1602598","BUG 1966288"],"advisory":"Security Advisory 0166","discovery":"INTERNAL"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-16T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-73464"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-17T03:56:52.621Z"}}]}}}