CVE-2026-73447Security Advisory 0162 - gNSI Certz/Bootz OS Command Injection via Crafted Rotate Request
- 9.4CriticalCVSS base score
- 0.70%Exploitation in 30 daysEPSS · top 46% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Arista
- 35 days later
· 35 days later
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| AristaCNA (assigner) | 4.0 | Critical9.4 | 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 |
| AristaCNA (assigner) | 3.1 | Critical9.1 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
| NVDNVD · Awaiting Analysis | 4.0 | Critical9.4 | 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 |
- EPSS (exploitation in 30 days)
- 0.70% · top 46% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.4.
Affected products
- affected 4.30.2F – < 4.31.0F
- affected 4.31.0F – < 4.32.0F
- affected 4.32.0F – < 4.33.0F
- affected 4.33.0F – ≤ 4.33.8M
- affected 4.34.0F – ≤ 4.34.7M
- affected 4.35.0F – ≤ 4.35.5M
- affected 4.36.0F – ≤ 4.36.0.1F
What to do
Solution: The following EOS releases contain the fix for this vulnerability: - 4.33.9M and later releases in the 4.33.x train - 4.34.7.1M and later releases in the 4.34.x train - 4.35.6M and later releases in the 4.35.x train - 4.36.1F and later releases in the 4.36.x train No hotfix is available for this vulnerability.
Workaround: For the Bootz service: - Do not include X509 PEM certificates in the initial CertzProfile during Bootz provisioning. For the Certz service (choose one): Option 1: Disable gNSI Certz entirely (requires manual SSL profile management going forward): switch(config)#management api gnsi switch(config-mgmt-api-gnsi)#no service certz 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: switch(config)#management api gnsi switch(config-mgmt-api-gnsi)#service authz To detect potential exploitation, configure auditd to monitor for suspicious child processes spawned by OpenConfig/Octa services: switch(config)#monitor security audit switch(config-audit)#rule group process-creation -a always,exit -F arch=b64 -S execve -k process-create -a always,exit -F arch=b32 -S execve -k process-create EOF switch(config-audit)#monitor group process-creation
References
References1
- Arista Networks Security Advisory 0162 (opens in a new tab)vendor-advisory
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-80216 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-73447)Record last updated .