{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-23811", "assignerOrgId": "eb103674-0d28-4225-80f8-39fb86215de0", "state": "PUBLISHED", "assignerShortName": "hpe", "dateReserved": "2026-01-16T15:22:38.201Z", "datePublished": "2026-03-04T16:12:32.715Z", "dateUpdated": "2026-03-04T17:47:01.196Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "affected", "product": "HPE Aruba Networking Wireless Operating Systems (AOS-8 & AOS-10)", "vendor": "Hewlett Packard Enterprise (HPE)", "versions": [{"status": "affected", "version": "10.8.0.0", "versionType": "semver"}, {"lessThanOrEqual": "10.7.2.2", "status": "affected", "version": "10.7.0.0", "versionType": "semver"}, {"lessThanOrEqual": "10.4.1.10", "status": "affected", "version": "10.4.0.0", "versionType": "semver"}, {"lessThanOrEqual": "10.13.1.1", "status": "affected", "version": "8.13.0.0", "versionType": "semver"}, {"lessThanOrEqual": "10.12.0.6", "status": "affected", "version": "8.12.0.0", "versionType": "semver"}, {"lessThanOrEqual": "10.13.0.21", "status": "affected", "version": "8.10.0.0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Xin'an Zhou, Juefei Pu, Zhutian Liu, Zhiyun Qian, Zhaowei Tan,Srikanth V. Krishnamurthy from University of California, and Mathy Vanhoef from DistriNet, KU Leuven"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>A vulnerability in the client isolation mechanism may allow an attacker to bypass Layer 2 (L2) communication restrictions between clients and redirect traffic at Layer 3 (L3). In addition to bypassing policy enforcement, successful exploitation - when combined with a port-stealing attack - may enable a bi-directional Machine-in-the-Middle (MitM) attack.</p>"}], "value": "A vulnerability in the client isolation mechanism may allow an attacker to bypass Layer 2 (L2) communication restrictions between clients and redirect traffic at Layer 3 (L3). In addition to bypassing policy enforcement, successful exploitation - when combined with a port-stealing attack - may enable a bi-directional Machine-in-the-Middle (MitM) attack."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "providerMetadata": {"orgId": "eb103674-0d28-4225-80f8-39fb86215de0", "shortName": "hpe", "dateUpdated": "2026-03-04T16:12:32.715Z"}, "references": [{"url": "https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05026en_us&docLocale=en_US"}], "source": {"advisory": "HPESBNW05026", "discovery": "EXTERNAL"}, "title": "Unauthorized Bi-Directional Traffic Interception via L2/L3 Manipulation", "x_generator": {"engine": "Vulnogram 0.2.0"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-300", "lang": "en", "description": "CWE-300 Channel Accessible by Non-Endpoint"}]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-03-04T17:46:38.750950Z", "id": "CVE-2026-23811", "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": "2026-03-04T17:47:01.196Z"}}]}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability in the client isolation mechanism may allow an attacker to bypass Layer 2 (L2) communication restrictions between clients and redirect traffic at Layer 3 (L3). In addition to bypassing policy enforcement, successful exploitation - when combined with a port-stealing attack - may enable a bi-directional Machine-in-the-Middle (MitM) attack."}], "id": "CVE-2026-23811", "lastModified": "2026-03-04T17:16:19.213", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "security-alert@hpe.com", "type": "Secondary"}]}, "published": "2026-03-04T17:16:19.213", "references": [{"source": "security-alert@hpe.com", "url": "https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05026en_us&docLocale=en_US"}], "sourceIdentifier": "security-alert@hpe.com", "vulnStatus": "Received"}

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