{"id":"CVE-2026-102164","state":"PUBLISHED","title":"Security Advisory 0196","description":"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.","publishedAt":"2026-10-06T19:40:31.913Z","updatedAt":"2026-10-06T20:07:54.692Z","severity":{"score":2.3,"label":"Low","version":"4.0","vector":"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","source":"Arista"},"assigner":"Arista","products":["Arista Networks Wi-Fi Access Points"],"affected":[{"vendor":"Arista Networks","product":"Wi-Fi Access Points","defaultStatus":"unaffected","versions":[{"version":"22.0.0","status":"affected","lessThanOrEqual":"22.0.1F-32","versionType":"custom"},{"version":"21.3.0","status":"affected","lessThanOrEqual":"21.3.0M-13","versionType":"custom"},{"version":"1.0.0","status":"affected","lessThan":"21.3.0","versionType":"custom"}],"platforms":["Wi-Fi Access Points"]}],"references":["https://www.arista.com/en/support/advisories-notices/security-advisory/24812-security-advisory-0196"],"weaknesses":["CWE-125"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/102xxx/CVE-2026-102164.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-102164","state":"PUBLISHED","datePublished":"2026-10-06T19:40:31.913Z","dateUpdated":"2026-10-06T20:07:54.692Z","assignerShortName":"Arista","assignerOrgId":"c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7","dateReserved":"2026-09-28T17:45:17.722Z"},"containers":{"cna":{"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."}],"affected":[{"vendor":"Arista Networks","product":"Wi-Fi Access Points","defaultStatus":"unaffected","versions":[{"version":"22.0.0","status":"affected","lessThanOrEqual":"22.0.1F-32","versionType":"custom"},{"version":"21.3.0","status":"affected","lessThanOrEqual":"21.3.0M-13","versionType":"custom"},{"version":"1.0.0","status":"affected","lessThan":"21.3.0","versionType":"custom"}],"platforms":["Wi-Fi Access Points"]}],"references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/24812-security-advisory-0196","tags":["vendor-advisory"]}],"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":[{"cweId":"CWE-125","type":"CWE","lang":"en","description":"CWE-125 Out-of-bounds Read"}]}],"providerMetadata":{"shortName":"Arista","orgId":"c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7","dateUpdated":"2026-10-06T19:40:31.913Z"},"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>"}]}],"source":{"advisory":"Security Advisory 0196","discovery":"INTERNAL","defects":["BUG 1774082"]}},"adp":[{"title":"CISA ADP Vulnrichment","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"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-06T20:07:54.692Z"}}]}}}