{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-23811", "tracking": { "current_release_date": "2026-04-01T17:39:25.449004Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-23811", "initial_release_date": "2026-03-04T13:25:40.501170Z", "revision_history": [ { "date": "2026-03-04T13:25:40.501170Z", "number": "1", "summary": "CVE created.| Source connected.| CVE status created. (valid)| Products connected (6).| References created (3)." }, { "date": "2026-03-04T13:25:42.984140Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-04T16:38:52.072329Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (6).| References created (1)." }, { "date": "2026-03-04T16:38:53.626112Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-04T17:26:06.213446Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (1)." }, { "date": "2026-03-04T17:26:13.705229Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-03-04T18:30:53.664024Z", "number": "7", "summary": "CWES updated (1)." }, { "date": "2026-03-04T18:30:58.578207Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-03-04T18:39:10.997616Z", "number": "9", "summary": "CWES updated (1).| Unknown change." }, { "date": "2026-03-04T18:39:14.039144Z", "number": "10", "summary": "NCSC Score updated." }, { "date": "2026-03-04T18:42:55.176040Z", "number": "11", "summary": "Source connected.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (12).| Product Remediations created (12).| References created (4)." }, { "date": "2026-03-04T18:42:58.400226Z", "number": "12", "summary": "NCSC Score updated." }, { "date": "2026-03-05T14:21:08.282244Z", "number": "13", "summary": "Source created.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-05T14:21:11.249163Z", "number": "14", "summary": "NCSC Score updated." }, { "date": "2026-03-09T19:25:20.795782Z", "number": "15", "summary": "Products connected (6).| Product Identifiers created (6)." }, { "date": "2026-03-09T19:25:26.337275Z", "number": "16", "summary": "NCSC Score updated." }, { "date": "2026-03-20T09:54:06.697627Z", "number": "17", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-20T09:54:09.648929Z", "number": "18", "summary": "NCSC Score updated." }, { "date": "2026-04-01T17:39:09.270382Z", "number": "19", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (6).| References created (1).| CWES updated (1).| Unknown change." }, { "date": "2026-04-01T17:39:16.845879Z", "number": "20", "summary": "NCSC Score updated." } ], "status": "interim", "version": "20" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<10.4.1.11", "product": { "name": "vers:unknown/<10.4.1.11", "product_id": "CSAFPID-5758072" } }, { "category": "product_version_range", "name": "vers:unknown/<10.7.2.3", "product": { "name": "vers:unknown/<10.7.2.3", "product_id": "CSAFPID-5758073" } }, { "category": "product_version_range", "name": "vers:unknown/<10.8.0.1", "product": { "name": "vers:unknown/<10.8.0.1", "product_id": "CSAFPID-5758070" } }, { "category": "product_version_range", "name": "vers:unknown/<8.10.0.22", "product": { "name": "vers:unknown/<8.10.0.22", "product_id": "CSAFPID-5758071" } }, { "category": "product_version_range", "name": "vers:unknown/<8.12.0.7", "product": { "name": "vers:unknown/<8.12.0.7", "product_id": "CSAFPID-5758074" } }, { "category": "product_version_range", "name": "vers:unknown/<8.13.1.2", "product": { "name": "vers:unknown/<8.13.1.2", "product_id": "CSAFPID-5758075" } } ], "category": "product_name", "name": "ArubaOS" } ], "category": "vendor", "name": "Aruba" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:semver/>=10.4.0.0|<=10.4.1.10", "product": { "name": "vers:semver/>=10.4.0.0|<=10.4.1.10", "product_id": "CSAFPID-5759265" } }, { "category": "product_version_range", "name": "vers:semver/>=10.7.0.0|<=10.7.2.2", "product": { "name": "vers:semver/>=10.7.0.0|<=10.7.2.2", "product_id": "CSAFPID-5759264" } }, { "category": "product_version_range", "name": "vers:semver/>=10.8.0.0|<=10.8.0.0", "product": { "name": "vers:semver/>=10.8.0.0|<=10.8.0.0", "product_id": "CSAFPID-5759263" } }, { "category": "product_version_range", "name": "vers:semver/>=8.10.0.0|<=10.13.0.21", "product": { "name": "vers:semver/>=8.10.0.0|<=10.13.0.21", "product_id": "CSAFPID-5759268" } }, { "category": "product_version_range", "name": "vers:semver/>=8.12.0.0|<=10.12.0.6", "product": { "name": "vers:semver/>=8.12.0.0|<=10.12.0.6", "product_id": "CSAFPID-5759267" } }, { "category": "product_version_range", "name": "vers:semver/>=8.13.0.0|<=10.13.1.1", "product": { "name": "vers:semver/>=8.13.0.0|<=10.13.1.1", "product_id": "CSAFPID-5759266" } }, { "category": "product_version_range", "name": "vers:semver/aos-10.4.1.11", "product": { "name": "vers:semver/aos-10.4.1.11", "product_id": "CSAFPID-5759259" } }, { "category": "product_version_range", "name": "vers:semver/aos-10.7.2.3", "product": { "name": "vers:semver/aos-10.7.2.3", "product_id": "CSAFPID-5759258" } }, { "category": "product_version_range", "name": "vers:semver/aos-10.8.0.1", "product": { "name": "vers:semver/aos-10.8.0.1", "product_id": "CSAFPID-5759257" } }, { "category": "product_version_range", "name": "vers:semver/aos-8.10.0.22", "product": { "name": "vers:semver/aos-8.10.0.22", "product_id": "CSAFPID-5759262" } }, { "category": "product_version_range", "name": "vers:semver/aos-8.12.0.7", "product": { "name": "vers:semver/aos-8.12.0.7", "product_id": "CSAFPID-5759261" } }, { "category": "product_version_range", "name": "vers:semver/aos-8.13.1.2", "product": { "name": "vers:semver/aos-8.13.1.2", "product_id": "CSAFPID-5759260" } } ], "category": "product_name", "name": "ArubaOS (AOS)" } ], "category": "vendor", "name": "HPE" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:semver/10.4.0.0|<=10.4.1.10", "product": { "name": "vers:semver/10.4.0.0|<=10.4.1.10", "product_id": "CSAFPID-5758403" } }, { "category": "product_version_range", "name": "vers:semver/10.7.0.0|<=10.7.2.2", "product": { "name": "vers:semver/10.7.0.0|<=10.7.2.2", "product_id": "CSAFPID-5758402" } }, { "category": "product_version_range", "name": "vers:semver/10.8.0.0", "product": { "name": "vers:semver/10.8.0.0", "product_id": "CSAFPID-5758401" } }, { "category": "product_version_range", "name": "vers:semver/8.10.0.0|<=10.13.0.21", "product": { "name": "vers:semver/8.10.0.0|<=10.13.0.21", "product_id": "CSAFPID-5758406" } }, { "category": "product_version_range", "name": "vers:semver/8.10.0.0|<=8.10.0.21", "product": { "name": "vers:semver/8.10.0.0|<=8.10.0.21", "product_id": "CSAFPID-5980795" } }, { "category": "product_version_range", "name": "vers:semver/8.12.0.0|<=10.12.0.6", "product": { "name": "vers:semver/8.12.0.0|<=10.12.0.6", "product_id": "CSAFPID-5758405" } }, { "category": "product_version_range", "name": "vers:semver/8.12.0.0|<=8.12.0.6", "product": { "name": "vers:semver/8.12.0.0|<=8.12.0.6", "product_id": "CSAFPID-5980794" } }, { "category": "product_version_range", "name": "vers:semver/8.13.0.0|<=10.13.1.1", "product": { "name": "vers:semver/8.13.0.0|<=10.13.1.1", "product_id": "CSAFPID-5758404" } }, { "category": "product_version_range", "name": "vers:semver/8.13.0.0|<=8.13.1.1", "product": { "name": "vers:semver/8.13.0.0|<=8.13.1.1", "product_id": "CSAFPID-5980793" } } ], "category": "product_name", "name": "HPE Aruba Networking Wireless Operating Systems (AOS-8 & AOS-10)" } ], "category": "vendor", "name": "Hewlett Packard Enterprise (HPE)" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/10.8.0.0", "product": { "name": "vers:unknown/10.8.0.0", "product_id": "CSAFPID-5772287", "product_identification_helper": { "cpe": "cpe:2.3:o:arubanetworks:arubaos:10.8.0.0:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=10.3.0.0|<=10.4.1.10", "product": { "name": "vers:unknown/>=10.3.0.0|<=10.4.1.10", "product_id": "CSAFPID-5772285", "product_identification_helper": { "cpe": "cpe:2.3:o:arubanetworks:arubaos:*:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=10.5.0.0|<=10.7.2.2", "product": { "name": "vers:unknown/>=10.5.0.0|<=10.7.2.2", "product_id": "CSAFPID-5772286", "product_identification_helper": { "cpe": "cpe:2.3:o:arubanetworks:arubaos:*:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=6.5.4.0|<=8.10.0.21", "product": { "name": "vers:unknown/>=6.5.4.0|<=8.10.0.21", "product_id": "CSAFPID-5772282", "product_identification_helper": { "cpe": "cpe:2.3:o:arubanetworks:arubaos:*:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=8.11.0.0|<=8.12.0.6", "product": { "name": "vers:unknown/>=8.11.0.0|<=8.12.0.6", "product_id": "CSAFPID-5772283", "product_identification_helper": { "cpe": "cpe:2.3:o:arubanetworks:arubaos:*:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=8.13.0.0|<=8.13.1.1", "product": { "name": "vers:unknown/>=8.13.0.0|<=8.13.1.1", "product_id": "CSAFPID-5772284", "product_identification_helper": { "cpe": "cpe:2.3:o:arubanetworks:arubaos:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "arubaos" } ], "category": "vendor", "name": "Aruba Networks" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-23811", "notes": [ { "category": "description", "text": "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.", "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-23811" }, { "category": "description", "text": "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.", "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-23811" }, { "category": "description", "text": "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.", "title": "hpe - https://csaf.arubanetworking.hpe.com/2026/hpe_aruba_networking_-_hpesbnw05026.json" }, { "category": "description", "text": "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.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/23xxx/CVE-2026-23811.json" }, { "category": "other", "text": "0.00015", "title": "EPSS" }, { "category": "other", "text": "5.1", "title": "NCSC Score" }, { "category": "other", "text": "VENDOR FIX as product remediation category, Is related to an uncommon product source, Is related to a product by vendor Hpe, There is product data available from source Certbundde", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "Is related to (a version of) an uncommon product, The value of the most recent EPSS score, The value of the most recent CVSS (V3) score, Is related to an uncommon product vendor", "title": "NCSC Score top decreasing factors" } ], "product_status": { "fixed": [ "CSAFPID-5759257", "CSAFPID-5759258", "CSAFPID-5759259", "CSAFPID-5759260", "CSAFPID-5759261", "CSAFPID-5759262" ], "known_affected": [ "CSAFPID-5758070", "CSAFPID-5758071", "CSAFPID-5758072", "CSAFPID-5758073", "CSAFPID-5758074", "CSAFPID-5758075", "CSAFPID-5758401", "CSAFPID-5758402", "CSAFPID-5758403", "CSAFPID-5758404", "CSAFPID-5758405", "CSAFPID-5758406", "CSAFPID-5759263", "CSAFPID-5759264", "CSAFPID-5759265", "CSAFPID-5759266", "CSAFPID-5759267", "CSAFPID-5759268", "CSAFPID-5772282", "CSAFPID-5772283", "CSAFPID-5772284", "CSAFPID-5772285", "CSAFPID-5772286", "CSAFPID-5772287", "CSAFPID-5980793", "CSAFPID-5980794", "CSAFPID-5980795" ] }, "references": [ { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0583.json" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://www.cve.org/CVERecord?id=CVE-2026-23811" }, { "category": "external", "summary": "Source raw - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/23xxx/CVE-2026-23811.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23811" }, { "category": "external", "summary": "Source raw - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-23811" }, { "category": "external", "summary": "Source - hpe", "url": "https://csaf.arubanetworking.hpe.com/2026/hpe_aruba_networking_-_hpesbnw05026.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-23811" }, { "category": "external", "summary": "Source raw - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/23xxx/CVE-2026-23811.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0583.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0583" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://csaf.arubanetworking.hpe.com/2026/hpe_aruba_networking_-_hpesbnw05026.txt" }, { "category": "external", "summary": "Reference - cveprojectv5; hpe; nvd", "url": "https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05026en_us&docLocale=en_US" }, { "category": "external", "summary": "Reference - hpe", "url": "https://www.ndss-symposium.org/wp-content/uploads/2026-f1282-paper.pdf" }, { "category": "external", "summary": "Reference - hpe", "url": "https://csaf.arubanetworking.hpe.com/" }, { "category": "external", "summary": "Reference - hpe", "url": "https://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=a00100637en_us" } ], "remediations": [ { "category": "vendor_fix", "details": "Upgrade Mobility Conductors, Controllers, Gateways, and Access \nPoints to one of the following AOS-10 or AOS-8 versions (as applicable) to resolve the vulnerabilities described in the details section: - AOS-10.8.x.x: 10.8.0.1 and above (Release ETA: First half of March 2026); - AOS-10.7.x.x: 10.7.2.3 and above; - AOS-10.4.x.x: 10.4.1.11 and above; - AOS-8.13.x.x: 8.13.1.2 and above; - AOS-8.12.x.x: 8.12.0.7 and above (Release ETA: Second half of March 2026); - AOS-8.10.x.x: 8.10.0.22 and above (Release ETA: First half of March 2026).\n\nSoftware versions with resolution/fixes for the vulnerabilities covered above can be downloaded from the HPE Networking Support Portal at https://networkingsupport.hpe.com/globalsearch#tab=Software\n\nHPE Aruba Networking does not evaluate or patch AOS-10 and AOS-8 software branches that have reached their End of Maintenance (EoM) milestone. For more information about HPE Aruba Networking's End of Life policy visit: https://www.hpe.com/psnow/doc/a00143052enw.", "product_ids": [ "CSAFPID-5759257", "CSAFPID-5759258", "CSAFPID-5759259", "CSAFPID-5759260", "CSAFPID-5759261", "CSAFPID-5759262" ], "url": "https://networkingsupport.hpe.com/globalsearch#tab=Software" }, { "category": "workaround", "details": "To reduce exposure to gateway bounce attacks, HPE Aruba Networking recommends enabling \"enforce-DHCP\" on affected systems to ensure that clients accept network configuration only from authorized DHCP exchanges. ", "product_ids": [ "CSAFPID-5759263", "CSAFPID-5759264", "CSAFPID-5759265", "CSAFPID-5759266", "CSAFPID-5759267", "CSAFPID-5759268" ] } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "baseScore": 4.3, "baseSeverity": "MEDIUM" }, "products": [ "CSAFPID-5758070", "CSAFPID-5758071", "CSAFPID-5758072", "CSAFPID-5758073", "CSAFPID-5758074", "CSAFPID-5758075", "CSAFPID-5758401", "CSAFPID-5758402", "CSAFPID-5758403", "CSAFPID-5758404", "CSAFPID-5758405", "CSAFPID-5758406", "CSAFPID-5759263", "CSAFPID-5759264", "CSAFPID-5759265", "CSAFPID-5759266", "CSAFPID-5759267", "CSAFPID-5759268", "CSAFPID-5772282", "CSAFPID-5772283", "CSAFPID-5772284", "CSAFPID-5772285", "CSAFPID-5772286", "CSAFPID-5772287", "CSAFPID-5980793", "CSAFPID-5980794", "CSAFPID-5980795" ] } ], "title": "CVE-2026-23811" } ] }