For the Certz service to be exploitable, gNSI Certz must be enabled on the device. This can be verified with:
\nswitch#show man api gnsi\nCertz enabled: yes\n
For the Bootz service to be exploitable, Bootz must be used for initial provisioning and a CertzProfile containing X509 PEM certificates must be included.
"}],"value":"For the Certz service to be exploitable, gNSI Certz must be enabled on the device. This can be verified with:\n\n switch#show man api gnsi\n Certz enabled: yes\n\nFor the Bootz service to be exploitable, Bootz must be used for initial provisioning and a CertzProfile containing X509 PEM certificates must be included."}],"datePublic":"2026-09-09T00:00:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"A privileged attacker can exploit certain operation to execute arbitrary commands with root privileges, leading to full device compromise. An authenticated user can exploit gRPC Network Security Interface (gNSI) Certz service on Arista EOS-based products to escalate privileges and execute arbitrary OS commands via a crafted Certz Rotate request. The Bootz service is also affected.
"}],"value":"A privileged attacker can exploit certain operation to execute arbitrary commands with root privileges, leading to full device compromise. An authenticated user can exploit gRPC Network Security Interface (gNSI) Certz service on Arista EOS-based products to escalate privileges and execute arbitrary OS commands via a crafted Certz Rotate request. The Bootz service is also affected."}],"impacts":[{"capecId":"CAPEC-88","descriptions":[{"lang":"en","value":"CAPEC-88 OS Command Injection"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]},{"cvssV4_0":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.4,"baseSeverity":"CRITICAL","privilegesRequired":"HIGH","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-78","description":"CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-09-16T06:04:25.573Z","orgId":"c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7","shortName":"Arista"},"references":[{"name":"Arista Networks Security Advisory 0162","tags":["vendor-advisory"],"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/24718-security-advisory-0162"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"The following EOS releases contain the fix for this vulnerability:
No hotfix is available for this vulnerability.
"}],"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."}],"source":{"advisory":"Security Advisory 0162","defects":["BUG 1602632"],"discovery":"INTERNAL"},"title":"Security Advisory 0162 - gNSI Certz/Bootz OS Command Injection via Crafted Rotate Request","workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"For the Bootz service:
For the Certz service (choose one):
Option 1: Disable gNSI Certz entirely (requires manual SSL profile management going forward):
\nswitch(config)#management api gnsi\nswitch(config-mgmt-api-gnsi)#no service certz\n
Option 2: Restrict Certz access using a gNSI Authz policy. Apply an authorization policy that limits the Certz Rotate RPC to only explicitly permitted users:
\nswitch(config)#management api gnsi\nswitch(config-mgmt-api-gnsi)#service authz\n
To detect potential exploitation, configure auditd to monitor for suspicious child processes spawned by OpenConfig/Octa services:
\nswitch(config)#monitor security audit\nswitch(config-audit)#rule group process-creation\n-a always,exit -F arch=b64 -S execve -k process-create\n-a always,exit -F arch=b32 -S execve -k process-create\nEOF\nswitch(config-audit)#monitor group process-creation\n"}],"value":"For the Bootz service:\n - Do not include X509 PEM certificates in the initial CertzProfile during Bootz provisioning.\n\nFor the Certz service (choose one):\n\n Option 1: Disable gNSI Certz entirely (requires manual SSL profile management going forward):\n switch(config)#management api gnsi\n switch(config-mgmt-api-gnsi)#no service certz\n\n Option 2: Restrict Certz access using a gNSI Authz policy. Apply an authorization policy that limits the Certz Rotate RPC to only explicitly permitted users:\n switch(config)#management api gnsi\n switch(config-mgmt-api-gnsi)#service authz\n\nTo detect potential exploitation, configure auditd to monitor for suspicious child processes spawned by OpenConfig/Octa services:\n switch(config)#monitor security audit\n switch(config-audit)#rule group process-creation\n -a always,exit -F arch=b64 -S execve -k process-create\n -a always,exit -F arch=b32 -S execve -k process-create\n EOF\n switch(config-audit)#monitor group process-creation"}]}},"cveMetadata":{"assignerOrgId":"c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7","assignerShortName":"Arista","cveId":"CVE-2026-73447","datePublished":"2026-09-16T06:04:25.573Z","dateReserved":"2026-08-12T16:42:47.921Z","dateUpdated":"2026-09-16T06:04:25.573Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-16 07:16:37","lastModifiedDate":"2026-09-16 07:16:37","problem_types":["CWE-78","CWE-78 CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')"],"metrics":{"cvssMetricV40":[{"source":"psirt@arista.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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":9.4,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"HIGH","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","subAvailabilityImpact":"HIGH","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:H/UI:N/S:C/C:H/I:H/A:H","baseScore":9.1,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.3,"impactScore":6}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"73447","Ordinal":"1","Title":"Security Advisory 0162 - gNSI Certz/Bootz OS Command Injection v","CVE":"CVE-2026-73447","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"73447","Ordinal":"1","NoteData":"A privileged attacker can exploit certain operation to execute arbitrary commands with root privileges, leading to full device compromise. An authenticated user can exploit gRPC Network Security Interface (gNSI) Certz service on Arista EOS-based products to escalate privileges and execute arbitrary OS commands via a crafted Certz Rotate request. The Bootz service is also affected.","Type":"Description","Title":"Security Advisory 0162 - gNSI Certz/Bootz OS Command Injection v"}]}}}