On affected platforms running Arista EOS, under certain circumstances plaintext shared secrets for configured Terminal Access Controller Access-Control System Plus (TACACS+) servers
Summary
| CVE | CVE-2026-73467 |
|---|---|
| State | PUBLISHED |
| Assigner | Arista |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-15 19:17:39 UTC |
| Updated | 2026-09-16 04:18:40 UTC |
| Description | On affected platforms running Arista EOS, under certain circumstances plaintext shared secrets for configured Terminal Access Controller Access-Control System Plus (TACACS+) servers |
Risk And Classification
Primary CVSS: v4.0 6 MEDIUM from [email protected]
CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:P/VC:H/VI:N/VA:N/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
Problem Types: CWE-532 | CWE-532 CWE-532 Insertion of Sensitive Information into Log File
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 6 | MEDIUM | CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:P/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/C... |
| 4.0 | CNA | CVSS | 6 | MEDIUM | CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:P/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H |
| 3.1 | [email protected] | Secondary | 6.3 | MEDIUM | CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H |
| 3.1 | CNA | CVSS | 6.3 | MEDIUM | CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H |
CVSS v4.0 Breakdown
CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:P/VC:H/VI:N/VA:N/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
CVSS v3.1 Breakdown
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Arista Networks | EOS | affected 4.36.0 4.36.1F custom | Not specified |
| CNA | Arista Networks | EOS | affected 4.35.0 4.35.4M custom | Not specified |
| CNA | Arista Networks | EOS | affected 4.34.0 4.34.7M custom | Not specified |
| CNA | Arista Networks | EOS | affected 0.0.0 4.33.9M custom | Not specified |
| CNA | Arista Networks | EOS | affected 4.32.0 custom | Not specified |
| CNA | Arista Networks | EOS | affected 4.31.0 custom | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| www.arista.com/en/support/advisories-notices/security-advisory/24709-securit... | [email protected] | www.arista.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Additional Advisory Data
Solutions
CNA: CVE-2026-73465 has been fixed in the following releases: * 4.36.2F and later releases in the 4.36.x train. * 4.35.5M and later releases in the 4.35.x train. * 4.34.8M and later releases in the 4.34.x train. * 4.33.10M and later releases in the 4.33.x train.
Workarounds
CNA: The workaround is to disable Tacacs level 6 tracing on agent Aaa. switch(config)# no trace Aaa enable Tacacs levels 6 Clean Up Existing Log Files If any of the above agent logging levels have been enabled, it’s necessary to clean up the existing log files to remove the already leaked secrets and keys. Use the following commands to clean up Aaa or ConfigAgent log files: switch(config)# bash sudo truncate -s 0 /var/log/agents/Aaa* switch(config)# bash sudo truncate -s 0 /var/log/agents/ConfigAgent* Then use the following commands to clean up previously rotated old log files: switch(config)# bash sudo find /var/log/agents -name 'Aaa*.gz' -type f -delete switch(config)# bash sudo find /var/log/agents -name 'ConfigAgent*.gz' -type f -delete