{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-102169", "assignerOrgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7", "state": "PUBLISHED", "assignerShortName": "Arista", "dateReserved": "2026-09-28T17:45:17.723Z", "datePublished": "2026-10-06T19:40:30.888Z", "dateUpdated": "2026-10-06T20:07:05.528Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7", "shortName": "Arista", "dateUpdated": "2026-10-06T19:40:30.888Z"}, "title": "Security Advisory 0194", "descriptions": [{"lang": "en", "value": "On affected Arista Wi-Fi access points with Captive Portal enabled, an unauthenticated wireless client connected to a captive-portal-enabled SSID can crash the portal service with a crafted HTTP request. The service automatically restarts, but a sustained low-rate attack can cause a persistent denial of service of the captive portal. Remote code execution is not possible.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>On affected Arista Wi-Fi access points with Captive Portal enabled, an unauthenticated wireless client connected to a captive-portal-enabled SSID can crash the portal service with a crafted HTTP request. The service automatically restarts, but a sustained low-rate attack can cause a persistent denial of service of the captive portal. Remote code execution is not 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:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 6.5, "baseSeverity": "MEDIUM"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "baseScore": 7.1, "baseSeverity": "HIGH"}}], "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-476", "lang": "en", "description": "CWE-476 NULL Pointer Dereference"}]}], "impacts": [{"capecId": "CAPEC-469", "descriptions": [{"lang": "en", "value": "CAPEC-469 HTTP DoS"}]}], "configurations": [{"lang": "en", "value": "In order to be vulnerable, Captive Portal must be enabled on at least one SSID, along with an associated client and LAN network. If the Captive Portal is not configured, the portal service is not running and the access point is not exposed to this vulnerability.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>In order to be vulnerable, Captive Portal must be enabled on at least one SSID, along with an associated client and LAN network. If the Captive Portal is not configured, the portal service is not running and the access point is not exposed to this vulnerability.</p>"}]}], "workarounds": [{"lang": "en", "value": "If Captive Portal is not required, disabling Captive Portal on all SSIDs eliminates exposure. If a Captive Portal is required, there is no mitigation available.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>If Captive Portal is not required, disabling Captive Portal on all SSIDs eliminates exposure. If a Captive Portal is required, there is no mitigation available.</p>"}]}], "solutions": [{"lang": "en", "value": "CVE-2026-102169 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-2026-102169 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/24810-security-advisory-0194", "tags": ["vendor-advisory"]}], "source": {"advisory": "Security Advisory 0194", "discovery": "INTERNAL", "defects": ["BUG 1846913"]}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-10-06T20:06:55.662490Z", "id": "CVE-2026-102169", "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": "2026-10-06T20:07:05.528Z"}}]}}

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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 Wi-Fi access points with Captive Portal enabled, an unauthenticated wireless client connected to a captive-portal-enabled SSID can crash the portal service with a crafted HTTP request. The service automatically restarts, but a sustained low-rate attack can cause a persistent denial of service of the captive portal. Remote code execution is not possible."}], "id": "CVE-2026-102169", "lastModified": "2026-10-06T20:17:12.197", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "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": "ADJACENT", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.1, "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:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "psirt@arista.com", "type": "Secondary"}]}, "published": "2026-10-06T20:17:12.197", "references": [{"source": "psirt@arista.com", "url": "https://www.arista.com/en/support/advisories-notices/security-advisory/24810-security-advisory-0194"}], "sourceIdentifier": "psirt@arista.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "psirt@arista.com", "type": "Secondary"}]}

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