On affected platforms running Arista EOS, under certain circumstances plaintext private keys
Summary
| CVE | CVE-2026-73465 |
|---|---|
| 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 private keys may be written in clear text to log files during operations when specialized non-standard debugging trace levels are explicitly enabled. To exploit these vulnerabilities, a malicious actor must already possess authenticated local administrative access to the device shell, and specialized non-standard debugging trace levels must be explicitly enabled. This issue was discovered internally by Arista, and the company is not aware of any malicious exploitation of this vulnerability in customer networks. |
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: This vulnerability may lead to exposed private keys on log files. As such, the following messages may appear at /var/log/agents/ConfigAgent-*: 2026-05-07 02:42:18.537932 18813 MgmtSecuritySslCertK 3 validateRsaPrivateKey start: -----BEGIN RSA PRIVATE KEY----- 2026-05-07 02:42:18.537932 18813 MgmtSecuritySslCertK 3 _getPemCount start: -----BEGIN EC PRIVATE KEY----- These messages can be found with the following grep command, when run from the bash shell: switch# grep "MgmtSecuritySslCertK" /var/log/agents/ConfigAgent-* | grep "PRIVATE KEY---"