{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-102164", "assignerOrgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7", "state": "PUBLISHED", "assignerShortName": "Arista", "dateReserved": "2026-09-28T17:45:17.722Z", "datePublished": "2026-10-06T19:40:31.913Z", "dateUpdated": "2026-10-06T20:07:54.692Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7", "shortName": "Arista", "dateUpdated": "2026-10-06T19:40:31.913Z"}, "title": "Security Advisory 0196", "descriptions": [{"lang": "en", "value": "On affected Arista access points configured with VXLAN tunnelling and L2-proxy (a specific configuration unique to the VESPA use-case), a wireless client associated to the tunnelled SSID can send a crafted packet, causing the access point to reveal memory contents in network traffic. No write primitive or remote code execution is possible.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>On affected Arista access points configured with VXLAN tunnelling and L2-proxy (a specific configuration unique to the VESPA use-case), a wireless client associated to the tunnelled SSID can send a crafted packet, causing the access point to reveal memory contents in network traffic. No write primitive or remote code execution is possible.</p>"}]}], "affected": [{"vendor": "Arista Networks", "product": "Wi-Fi Access Points", "platforms": ["Wi-Fi Access Points"], "defaultStatus": "unaffected", "versions": [{"version": "22.0.0", "lessThanOrEqual": "22.0.1F-32", "status": "affected", "versionType": "custom"}, {"version": "21.3.0", "lessThanOrEqual": "21.3.0M-13", "status": "affected", "versionType": "custom"}, {"version": "1.0.0", "lessThan": "21.3.0", "status": "affected", "versionType": "custom"}]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N", "baseScore": 3.1, "baseSeverity": "LOW"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N", "baseScore": 2.3, "baseSeverity": "LOW"}}], "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-125", "lang": "en", "description": "CWE-125 Out-of-bounds Read"}]}], "impacts": [{"capecId": "CAPEC-540", "descriptions": [{"lang": "en", "value": "CAPEC-540 Overread Buffers"}]}], "configurations": [{"lang": "en", "value": "VXLAN tunnelling with L2-proxy must be enabled. This is a non-default configuration. If L2-proxy is not configured, the access point is not exposed to this vulnerability. The issue can be triggered either from the LAN or by an associated client.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>VXLAN tunnelling with L2-proxy must be enabled. This is a non-default configuration. If L2-proxy is not configured, the access point is not exposed to this vulnerability. The issue can be triggered either from the LAN or by an associated client.</p>"}]}], "workarounds": [{"lang": "en", "value": "If VXLAN tunnelling with L2-proxy is not required, disabling this configuration eliminates exposure.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>If VXLAN tunnelling with L2-proxy is not required, disabling this configuration eliminates exposure.</p>"}]}], "solutions": [{"lang": "en", "value": "CVE-2026-102164 has been fixed in the following releases:\n- 22.1.1F-61 and later release in the 22.x train\n- 21.4.0M-12 and later releases in the 21.x train", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>CVE-2026-102164 has been fixed in the following releases:</p><ul><li>22.1.1F-61 and later release in the 22.x train</li><li>21.4.0M-12 and later releases in the 21.x train</li></ul>"}]}], "references": [{"url": "https://www.arista.com/en/support/advisories-notices/security-advisory/24812-security-advisory-0196", "tags": ["vendor-advisory"]}], "source": {"advisory": "Security Advisory 0196", "discovery": "INTERNAL", "defects": ["BUG 1774082"]}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-10-06T20:07:46.593021Z", "id": "CVE-2026-102164", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-06T20:07:54.692Z"}}]}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "platforms": ["Wi-Fi Access Points"], "product": "Wi-Fi Access Points", "vendor": "Arista Networks", "versions": [{"lessThanOrEqual": "22.0.1F-32", "status": "affected", "version": "22.0.0", "versionType": "custom"}, {"lessThanOrEqual": "21.3.0M-13", "status": "affected", "version": "21.3.0", "versionType": "custom"}, {"lessThan": "21.3.0", "status": "affected", "version": "1.0.0", "versionType": "custom"}]}], "source": "psirt@arista.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "On affected Arista access points configured with VXLAN tunnelling and L2-proxy (a specific configuration unique to the VESPA use-case), a wireless client associated to the tunnelled SSID can send a crafted packet, causing the access point to reveal memory contents in network traffic. No write primitive or remote code execution is possible."}], "id": "CVE-2026-102164", "lastModified": "2026-10-06T20:17:11.667", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 3.1, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 1.4, "source": "psirt@arista.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "ADJACENT", "availabilityRequirement": "NOT_DEFINED", "baseScore": 2.3, "baseSeverity": "LOW", "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:A/AC:L/AT:P/PR:N/UI:N/VC:L/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": "LOW", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "psirt@arista.com", "type": "Secondary"}]}, "published": "2026-10-06T20:17:11.667", "references": [{"source": "psirt@arista.com", "url": "https://www.arista.com/en/support/advisories-notices/security-advisory/24812-security-advisory-0196"}], "sourceIdentifier": "psirt@arista.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "psirt@arista.com", "type": "Secondary"}]}

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