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."}]}],"references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/24709-security-advisory-0153","name":"Arista Security Advisory 0153","tags":["vendor-advisory"]}],"configurations":[{"lang":"en","value":"In order to be vulnerable to CVE-2026-73465, the following condition must be met:\n\n\n\nMgmtSecuritySslCertKey trace levels 0, 3 and/or 4, on agent ConfigAgent, must be enabled.\n\n\n\nswitch# show trace ConfigAgent | grep MgmtSecuritySslCertKey MgmtSecuritySslCertKey enabled 01.34......\n\n\n \n\n\n\nIf MgmtSecuritySslCertKey traces levels 0, 3 and 4 are disabled, there is no exposure to this issue and the message will look something like:\n\n\n\nswitch# show trace ConfigAgent | grep MgmtSecuritySslCertKey MgmtSecuritySslCertKey enabled ...........","supportingMedia":[{"type":"text/html","base64":false,"value":"
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.\n\nThis issue was discovered internally by Arista, and the company is not aware of any malicious exploitation of this vulnerability in customer networks.\n
"}]}],"workarounds":[{"lang":"en","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 \n\n\n\n2026-05-07 02:42:18.537932 18813 MgmtSecuritySslCertK 3 _getPemCount start: -----BEGIN EC PRIVATE KEY-----\n\n\n \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---\"","supportingMedia":[{"type":"text/html","base64":false,"value":"In order to be vulnerable to CVE-2026-73465, the following condition must be met:
MgmtSecuritySslCertKey trace levels 0, 3 and/or 4, on agent ConfigAgent, must be enabled.
switch# show trace ConfigAgent | grep MgmtSecuritySslCertKey MgmtSecuritySslCertKey enabled 01.34......\nIf MgmtSecuritySslCertKey traces levels 0, 3 and 4 are disabled, there is no exposure to this issue and the message will look something like:
switch# show trace ConfigAgent | grep MgmtSecuritySslCertKey MgmtSecuritySslCertKey enabled ...........
"}]}],"solutions":[{"lang":"en","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.","supportingMedia":[{"type":"text/html","base64":false,"value":"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-----\n2026-05-07 02:42:18.537932 18813 MgmtSecuritySslCertK 3 _getPemCount start: -----BEGIN EC PRIVATE KEY-----\nThese 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---\"
\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"}]}],"source":{"advisory":"Security Advisory 0153","discovery":"INTERNAL","defects":["BUG 1595862","BUG 1966285 (DMF)"]},"x_generator":{"engine":"Vulnogram 1.0.5"},"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"HIGH","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseSeverity":"MEDIUM","baseScore":6.3,"vectorString":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"HIGH","attackRequirements":"NONE","privilegesRequired":"HIGH","userInteraction":"PASSIVE","vulnConfidentialityImpact":"HIGH","subConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","subIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subAvailabilityImpact":"HIGH","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":6,"vectorString":"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"}}]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-16T03:57:04.010625Z","id":"CVE-2026-73465","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-17T11:57:21.646Z"}}]}}