CVE-2026-121371

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-121371", "assignerOrgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7", "state": "PUBLISHED", "assignerShortName": "Arista", "dateReserved": "2026-11-03T11:27:14.150Z", "datePublished": "2026-11-10T20:10:01.905Z", "dateUpdated": "2026-11-10T22:02:11.894Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7", "shortName": "Arista", "dateUpdated": "2026-11-10T20:10:01.905Z"}, "title": "Security Advisory 0218", "descriptions": [{"lang": "en", "value": "On affected EOS versions with the eAPI service enabled, a specially crafted HTTP request can allow an unauthenticated, remote attacker to read arbitrary files, including sensitive credentials from the switch filesystem."}], "affected": [{"vendor": "Arista Networks", "product": "EOS", "defaultStatus": "unaffected", "versions": [{"version": "4.36.0F", "status": "affected", "versionType": "custom", "lessThanOrEqual": "4.36.3M"}, {"version": "4.35.0F", "status": "affected", "versionType": "custom", "lessThanOrEqual": "4.35.7M"}, {"version": "4.34.0F", "status": "affected", "versionType": "custom", "lessThanOrEqual": "4.34.9M"}, {"version": "4.33.0F", "status": "affected", "versionType": "custom", "lessThanOrEqual": "4.33.11M"}, {"version": "4.32.0F", "status": "affected", "versionType": "custom", "lessThan": "4.33.0F"}, {"version": "1.0.0", "status": "affected", "versionType": "custom", "lessThan": "4.32.0F"}], "platforms": ["710 Series", "720D Series", "720XP/722XPM Series", "750X Series", "7010TX Series", "7020R/R4 Series", "7130 Series running EOS", "7170 Series", "7050X3/X4 Series", "7060X/X2/X4/X5/X6/XE7 Series", "7260X/X3 Series", "7280R/R2/R3/R4 Series", "7300X/X3 Series", "7320X Series", "7358X4 Series", "7368X4 Series", "7388X5 Series", "7500R/R2/R3 Series", "7800R3/R4 Series", "7700R4 Series", "AWE 5000 Series", "AWE 7200R Series", "ZTX-7200 Series", "CloudEOS", "cEOS-lab", "vEOS-lab", "CloudVision eXchange, virtual or physical appliance"]}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "baseScore": 7.5, "baseSeverity": "HIGH"}}, {"cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N", "baseScore": 8.7, "baseSeverity": "HIGH"}}], "references": [{"url": "https://www.arista.com/en/support/advisories-notices/security-advisory/25040-security-advisory-0218", "tags": ["vendor-advisory"]}], "source": {"defects": ["2048764"], "advisory": "Security Advisory 0218", "discovery": "INTERNAL"}, "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-22", "description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"}]}], "configurations": [{"lang": "en", "value": "switch>show management api http-commands \nEnabled: Yes\nHTTPS server: running, set to use port 443\nHTTP server: running, set to use port 80\n...\n\nswitch#show running-config all| sect http-server\nmanagement http-server\n ...\n default-services\n ...\n\nOr:\n\nswitch#show running-config all| sect http-commands\nmanagement api http-commands\n ...\n default-services\n ...", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<pre>switch>show management api http-commands \nEnabled: Yes\nHTTPS server: running, set to use port 443\nHTTP server: running, set to use port 80\n...\n\nswitch#show running-config all| sect http-server\nmanagement http-server\n ...\n default-services\n ...\n\nOr:\n\nswitch#show running-config all| sect http-commands\nmanagement api http-commands\n ...\n default-services\n ...</pre>"}]}], "workarounds": [{"lang": "en", "value": "switch(config)#management http-server \nswitch(config-mgmt-http-server)#no default-services\n\nswitch#show running-config | sect http-server\nmanagement http-server\n protocol http\n no default-services\n\nOr:\n\nswitch(config)#management api http-commands \nswitch(config-mgmt-api-http-cmds)#no default-services \n\nswitch#show running-config | sect http-commands\nmanagement api http-commands\n protocol http\n no default-services\n no shutdown", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<pre>switch(config)#management http-server \nswitch(config-mgmt-http-server)#no default-services\n\nswitch#show running-config | sect http-server\nmanagement http-server\n protocol http\n no default-services\n\nOr:\n\nswitch(config)#management api http-commands \nswitch(config-mgmt-api-http-cmds)#no default-services \n\nswitch#show running-config | sect http-commands\nmanagement api http-commands\n protocol http\n no default-services\n no shutdown</pre>"}]}], "impacts": [{"capecId": "CAPEC-126", "descriptions": [{"lang": "en", "value": "CAPEC-126 Path Traversal"}]}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-121371", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-10T21:22:30.414859Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-10T22:02:11.894Z"}}]}}

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-121371", "assignerOrgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7", "state": "PUBLISHED", "assignerShortName": "Arista", "dateReserved": "2026-11-03T11:27:14.150Z", "datePublished": "2026-11-10T20:10:01.905Z", "dateUpdated": "2026-11-10T22:02:11.894Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7", "shortName": "Arista", "dateUpdated": "2026-11-10T20:10:01.905Z"}, "title": "Security Advisory 0218", "descriptions": [{"lang": "en", "value": "On affected EOS versions with the eAPI service enabled, a specially crafted HTTP request can allow an unauthenticated, remote attacker to read arbitrary files, including sensitive credentials from the switch filesystem."}], "affected": [{"vendor": "Arista Networks", "product": "EOS", "defaultStatus": "unaffected", "versions": [{"version": "4.36.0F", "status": "affected", "versionType": "custom", "lessThanOrEqual": "4.36.3M"}, {"version": "4.35.0F", "status": "affected", "versionType": "custom", "lessThanOrEqual": "4.35.7M"}, {"version": "4.34.0F", "status": "affected", "versionType": "custom", "lessThanOrEqual": "4.34.9M"}, {"version": "4.33.0F", "status": "affected", "versionType": "custom", "lessThanOrEqual": "4.33.11M"}, {"version": "4.32.0F", "status": "affected", "versionType": "custom", "lessThan": "4.33.0F"}, {"version": "1.0.0", "status": "affected", "versionType": "custom", "lessThan": "4.32.0F"}], "platforms": ["710 Series", "720D Series", "720XP/722XPM Series", "750X Series", "7010TX Series", "7020R/R4 Series", "7130 Series running EOS", "7170 Series", "7050X3/X4 Series", "7060X/X2/X4/X5/X6/XE7 Series", "7260X/X3 Series", "7280R/R2/R3/R4 Series", "7300X/X3 Series", "7320X Series", "7358X4 Series", "7368X4 Series", "7388X5 Series", "7500R/R2/R3 Series", "7800R3/R4 Series", "7700R4 Series", "AWE 5000 Series", "AWE 7200R Series", "ZTX-7200 Series", "CloudEOS", "cEOS-lab", "vEOS-lab", "CloudVision eXchange, virtual or physical appliance"]}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "baseScore": 7.5, "baseSeverity": "HIGH"}}, {"cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N", "baseScore": 8.7, "baseSeverity": "HIGH"}}], "references": [{"url": "https://www.arista.com/en/support/advisories-notices/security-advisory/25040-security-advisory-0218", "tags": ["vendor-advisory"]}], "source": {"defects": ["2048764"], "advisory": "Security Advisory 0218", "discovery": "INTERNAL"}, "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-22", "description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"}]}], "configurations": [{"lang": "en", "value": "switch>show management api http-commands \nEnabled: Yes\nHTTPS server: running, set to use port 443\nHTTP server: running, set to use port 80\n...\n\nswitch#show running-config all| sect http-server\nmanagement http-server\n ...\n default-services\n ...\n\nOr:\n\nswitch#show running-config all| sect http-commands\nmanagement api http-commands\n ...\n default-services\n ...", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<pre>switch>show management api http-commands \nEnabled: Yes\nHTTPS server: running, set to use port 443\nHTTP server: running, set to use port 80\n...\n\nswitch#show running-config all| sect http-server\nmanagement http-server\n ...\n default-services\n ...\n\nOr:\n\nswitch#show running-config all| sect http-commands\nmanagement api http-commands\n ...\n default-services\n ...</pre>"}]}], "workarounds": [{"lang": "en", "value": "switch(config)#management http-server \nswitch(config-mgmt-http-server)#no default-services\n\nswitch#show running-config | sect http-server\nmanagement http-server\n protocol http\n no default-services\n\nOr:\n\nswitch(config)#management api http-commands \nswitch(config-mgmt-api-http-cmds)#no default-services \n\nswitch#show running-config | sect http-commands\nmanagement api http-commands\n protocol http\n no default-services\n no shutdown", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<pre>switch(config)#management http-server \nswitch(config-mgmt-http-server)#no default-services\n\nswitch#show running-config | sect http-server\nmanagement http-server\n protocol http\n no default-services\n\nOr:\n\nswitch(config)#management api http-commands \nswitch(config-mgmt-api-http-cmds)#no default-services \n\nswitch#show running-config | sect http-commands\nmanagement api http-commands\n protocol http\n no default-services\n no shutdown</pre>"}]}], "impacts": [{"capecId": "CAPEC-126", "descriptions": [{"lang": "en", "value": "CAPEC-126 Path Traversal"}]}]}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-121371", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-10T21:22:30.414859Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-10T21:58:35.555Z"}}]}}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "platforms": ["710 Series", "720D Series", "720XP/722XPM Series", "750X Series", "7010TX Series", "7020R/R4 Series", "7130 Series running EOS", "7170 Series", "7050X3/X4 Series", "7060X/X2/X4/X5/X6/XE7 Series", "7260X/X3 Series", "7280R/R2/R3/R4 Series", "7300X/X3 Series", "7320X Series", "7358X4 Series", "7368X4 Series", "7388X5 Series", "7500R/R2/R3 Series", "7800R3/R4 Series", "7700R4 Series", "AWE 5000 Series", "AWE 7200R Series", "ZTX-7200 Series", "CloudEOS", "cEOS-lab", "vEOS-lab", "CloudVision eXchange, virtual or physical appliance"], "product": "EOS", "vendor": "Arista Networks", "versions": [{"lessThanOrEqual": "4.36.3M", "status": "affected", "version": "4.36.0F", "versionType": "custom"}, {"lessThanOrEqual": "4.35.7M", "status": "affected", "version": "4.35.0F", "versionType": "custom"}, {"lessThanOrEqual": "4.34.9M", "status": "affected", "version": "4.34.0F", "versionType": "custom"}, {"lessThanOrEqual": "4.33.11M", "status": "affected", "version": "4.33.0F", "versionType": "custom"}, {"lessThan": "4.33.0F", "status": "affected", "version": "4.32.0F", "versionType": "custom"}, {"lessThan": "4.32.0F", "status": "affected", "version": "1.0.0", "versionType": "custom"}]}], "source": "psirt@arista.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "On affected EOS versions with the eAPI service enabled, a specially crafted HTTP request can allow an unauthenticated, remote attacker to read arbitrary files, including sensitive credentials from the switch filesystem."}], "id": "CVE-2026-121371", "lastModified": "2026-11-12T19:24:37.847", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "psirt@arista.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "psirt@arista.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-121371", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-10T21:22:30.414859Z", "version": "2.0.3"}}]}, "published": "2026-11-10T20:18:56.640", "references": [{"source": "psirt@arista.com", "url": "https://www.arista.com/en/support/advisories-notices/security-advisory/25040-security-advisory-0218"}], "sourceIdentifier": "psirt@arista.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "psirt@arista.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": ["710_series", "720d_series", "720xp/722xpm_series", "750x_series", "7010tx_series", "7020r/r4_series", "7130_series_running_eos", "7170_series", "7050x3/x4_series", "7060x/x2/x4/x5/x6/xe7_series", "7260x/x3_series", "7280r/r2/r3/r4_series", "7300x/x3_series", "7320x_series", "7358x4_series", "7368x4_series", "7388x5_series", "7500r/r2/r3_series", "7800r3/r4_series", "7700r4_series", "awe_5000_series", "awe_7200r_series", "ztx-7200_series", "cloudeos", "ceos-lab", "veos-lab", "cloudvision_exchange,_virtual_or_physical_appliance"], "status": "affected", "versions": {"scheme": "generic", "value": "[4.36.0F,4.36.3M]"}}, {"platform": ["710_series", "720d_series", "720xp/722xpm_series", "750x_series", "7010tx_series", "7020r/r4_series", "7130_series_running_eos", "7170_series", "7050x3/x4_series", "7060x/x2/x4/x5/x6/xe7_series", "7260x/x3_series", "7280r/r2/r3/r4_series", "7300x/x3_series", "7320x_series", "7358x4_series", "7368x4_series", "7388x5_series", "7500r/r2/r3_series", "7800r3/r4_series", "7700r4_series", "awe_5000_series", "awe_7200r_series", "ztx-7200_series", "cloudeos", "ceos-lab", "veos-lab", "cloudvision_exchange,_virtual_or_physical_appliance"], "status": "affected", "versions": {"scheme": "generic", "value": "[4.35.0F,4.35.7M]"}}, {"platform": ["710_series", "720d_series", "720xp/722xpm_series", "750x_series", "7010tx_series", "7020r/r4_series", "7130_series_running_eos", "7170_series", "7050x3/x4_series", "7060x/x2/x4/x5/x6/xe7_series", "7260x/x3_series", "7280r/r2/r3/r4_series", "7300x/x3_series", "7320x_series", "7358x4_series", "7368x4_series", "7388x5_series", "7500r/r2/r3_series", "7800r3/r4_series", "7700r4_series", "awe_5000_series", "awe_7200r_series", "ztx-7200_series", "cloudeos", "ceos-lab", "veos-lab", "cloudvision_exchange,_virtual_or_physical_appliance"], "status": "affected", "versions": {"scheme": "generic", "value": "[4.34.0F,4.34.9M]"}}, {"platform": ["710_series", "720d_series", "720xp/722xpm_series", "750x_series", "7010tx_series", "7020r/r4_series", "7130_series_running_eos", "7170_series", "7050x3/x4_series", "7060x/x2/x4/x5/x6/xe7_series", "7260x/x3_series", "7280r/r2/r3/r4_series", "7300x/x3_series", "7320x_series", "7358x4_series", "7368x4_series", "7388x5_series", "7500r/r2/r3_series", "7800r3/r4_series", "7700r4_series", "awe_5000_series", "awe_7200r_series", "ztx-7200_series", "cloudeos", "ceos-lab", "veos-lab", "cloudvision_exchange,_virtual_or_physical_appliance"], "status": "affected", "versions": {"scheme": "generic", "value": "[4.33.0F,4.33.11M]"}}, {"platform": ["710_series", "720d_series", "720xp/722xpm_series", "750x_series", "7010tx_series", "7020r/r4_series", "7130_series_running_eos", "7170_series", "7050x3/x4_series", "7060x/x2/x4/x5/x6/xe7_series", "7260x/x3_series", "7280r/r2/r3/r4_series", "7300x/x3_series", "7320x_series", "7358x4_series", "7368x4_series", "7388x5_series", "7500r/r2/r3_series", "7800r3/r4_series", "7700r4_series", "awe_5000_series", "awe_7200r_series", "ztx-7200_series", "cloudeos", "ceos-lab", "veos-lab", "cloudvision_exchange,_virtual_or_physical_appliance"], "status": "affected", "versions": {"scheme": "generic", "value": "[4.32.0F,4.33.0F)"}}, {"platform": ["710_series", "720d_series", "720xp/722xpm_series", "750x_series", "7010tx_series", "7020r/r4_series", "7130_series_running_eos", "7170_series", "7050x3/x4_series", "7060x/x2/x4/x5/x6/xe7_series", "7260x/x3_series", "7280r/r2/r3/r4_series", "7300x/x3_series", "7320x_series", "7358x4_series", "7368x4_series", "7388x5_series", "7500r/r2/r3_series", "7800r3/r4_series", "7700r4_series", "awe_5000_series", "awe_7200r_series", "ztx-7200_series", "cloudeos", "ceos-lab", "veos-lab", "cloudvision_exchange,_virtual_or_physical_appliance"], "status": "affected", "versions": {"scheme": "generic", "value": "[1.0.0,4.32.0F)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "EOS", "source": "cna", "vendor": "Arista Networks"}, "product": "eos", "vendor": "arista"}], "created": "2026-11-11T22:30:18.304274+00:00", "title": "Unauthenticated Remote File Read via eAPI in Arista EOS", "updated": "2026-11-13T10:15:19.235764+00:00", "vendors": ["arista", "arista$PRODUCT$eos"]}