CVE-2026-73465 (GCVE-0-2026-73465)
Vulnerability from cvelistv5 – Published: 2026-09-15 18:36 – Updated: 2026-09-17 11:57
VLAI
EPSS
VEX
Title
On affected platforms running Arista EOS, under certain circumstances plaintext private keys
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 03:57 UTC
CWE
- CWE-532 - Insertion of Sensitive Information into Log File
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.arista.com/en/support/advisories-noti… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Arista Networks | EOS |
Affected:
4.36.0 , ≤ 4.36.1F
(custom)
Affected: 4.35.0 , ≤ 4.35.4M (custom) Affected: 4.34.0 , ≤ 4.34.7M (custom) Affected: 0.0.0 , ≤ 4.33.9M (custom) Affected: 0 , ≤ 4.32.0 (custom) Affected: 0 , ≤ 4.31.0 (custom) |
guessed |
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"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
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"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
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"descriptions": [
{
"cweId": "CWE-532",
"description": "CWE-532 Insertion of Sensitive Information into Log File",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-15T18:36:51.963Z",
"orgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7",
"shortName": "Arista"
},
"references": [
{
"name": "Arista Security Advisory 0153",
"tags": [
"vendor-advisory"
],
"url": "https://www.arista.com/en/support/advisories-notices/security-advisory/24709-security-advisory-0153"
}
],
"solutions": [
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"value": "\u003cpre\u003e\nCVE-2026-73465 has been fixed in the following releases:\n* 4.36.2F and later releases in the 4.36.x train.\n* 4.35.5M and later releases in the 4.35.x train.\n* 4.34.8M and later releases in the 4.34.x train.\n* 4.33.10M and later releases in the 4.33.x train.\n\u003c/pre\u003e"
}
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"value": "CVE-2026-73465 has been fixed in the following releases:\n* 4.36.2F and later releases in the 4.36.x train.\n* 4.35.5M and later releases in the 4.35.x train.\n* 4.34.8M and later releases in the 4.34.x train.\n* 4.33.10M and later releases in the 4.33.x train."
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],
"source": {
"advisory": "Security Advisory 0153",
"defects": [
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"BUG 1966285 (DMF)"
],
"discovery": "INTERNAL"
},
"title": "On affected platforms running Arista EOS, under certain circumstances plaintext private keys",
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"value": "\u003cpre\u003e\u003cp\u003eThis vulnerability may lead to exposed private keys on log files. As such, the following messages may appear at /var/log/agents/ConfigAgent-*:\u003c/p\u003e\u003cpre\u003e2026-05-07 02:42:18.537932 18813 MgmtSecuritySslCertK 3 validateRsaPrivateKey start: -----BEGIN RSA PRIVATE KEY-----\n\u003c/pre\u003e\u003cdiv\u003e\u0026nbsp;\u003c/div\u003e\u003cpre\u003e2026-05-07 02:42:18.537932 18813 MgmtSecuritySslCertK 3 _getPemCount start: -----BEGIN EC PRIVATE KEY-----\n\u003c/pre\u003e\u003cdiv\u003e\u0026nbsp;\u003c/div\u003e\u003cp\u003eThese messages can be found with the following grep command, when run from the bash shell:\u003c/p\u003e\u003cpre\u003eswitch# grep \"MgmtSecuritySslCertK\" /var/log/agents/ConfigAgent-* | grep \"PRIVATE KEY---\"\u003c/pre\u003e\u003c/pre\u003e"
}
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"value": "This vulnerability may lead to exposed private keys on log files. As such, the following messages may appear at /var/log/agents/ConfigAgent-*:\n\n\n\n2026-05-07 02:42:18.537932 18813 MgmtSecuritySslCertK 3 validateRsaPrivateKey start: -----BEGIN RSA PRIVATE KEY-----\n\n\n\u00a0\n\n\n\n2026-05-07 02:42:18.537932 18813 MgmtSecuritySslCertK 3 _getPemCount start: -----BEGIN EC PRIVATE KEY-----\n\n\n\u00a0\n\n\n\nThese messages can be found with the following grep command, when run from the bash shell:\n\n\n\nswitch# grep \"MgmtSecuritySslCertK\" /var/log/agents/ConfigAgent-* | grep \"PRIVATE KEY---\""
}
],
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"assignerShortName": "Arista",
"cveId": "CVE-2026-73465",
"datePublished": "2026-09-15T18:36:51.963Z",
"dateReserved": "2026-08-12T16:47:18.121Z",
"dateUpdated": "2026-09-16T03:57:02.878Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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