{ "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-2026-10640", "tracking": { "current_release_date": "2026-09-07T03:20:38.550093Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-10640", "initial_release_date": "2026-06-16T15:42:45.196212Z", "revision_history": [ { "date": "2026-06-16T15:42:45.196212Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (2).| CWES updated (1)." }, { "date": "2026-06-16T15:42:47.213720Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-06-16T15:48:15.349562Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-06-16T15:48:17.987393Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-06-16T17:07:39.132971Z", "number": "5", "summary": "Unknown change." }, { "date": "2026-06-17T14:34:28.390527Z", "number": "6", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-06-17T14:34:34.306446Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-06-26T22:26:03.441631Z", "number": "8", "summary": "Products created (1).| Product Identifiers created (1).| Exploits created (1)." }, { "date": "2026-06-26T22:26:09.187357Z", "number": "9", "summary": "NCSC Score updated." }, { "date": "2026-06-27T17:51:49.250462Z", "number": "10", "summary": "EPSS updated." }, { "date": "2026-06-27T17:51:54.500153Z", "number": "11", "summary": "NCSC Score updated." }, { "date": "2026-07-10T15:41:49.103324Z", "number": "12", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-07-10T15:41:51.452535Z", "number": "13", "summary": "NCSC Score updated." }, { "date": "2026-07-13T02:49:36.611987Z", "number": "14", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (39).| References created (4).| CWES updated (1)." }, { "date": "2026-07-13T02:49:50.557950Z", "number": "15", "summary": "NCSC Score updated." }, { "date": "2026-07-14T20:04:39.987328Z", "number": "16", "summary": "Description removed for source.| Description created for source." }, { "date": "2026-07-14T20:04:42.380359Z", "number": "17", "summary": "NCSC Score updated." }, { "date": "2026-07-14T20:18:36.069556Z", "number": "18", "summary": "Description removed for source.| Description created for source." }, { "date": "2026-07-15T09:04:45.456075Z", "number": "19", "summary": "Description removed for source.| Description created for source." }, { "date": "2026-08-11T15:11:53.529744Z", "number": "20", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-08-11T15:11:55.569086Z", "number": "21", "summary": "NCSC Score updated." }, { "date": "2026-09-02T10:45:46.515673Z", "number": "22", "summary": "EPSS updated." }, { "date": "2026-09-02T23:34:59.479169Z", "number": "23", "summary": "NCSC Score updated." }, { "date": "2026-09-03T14:38:16.913121Z", "number": "24", "summary": "EPSS updated." }, { "date": "2026-09-03T19:01:42.039217Z", "number": "25", "summary": "EPSS updated." }, { "date": "2026-09-04T15:47:42.490356Z", "number": "26", "summary": "EPSS updated." }, { "date": "2026-09-05T03:59:21.360735Z", "number": "27", "summary": "NCSC Score updated." }, { "date": "2026-09-05T15:45:35.146956Z", "number": "28", "summary": "EPSS updated." }, { "date": "2026-09-06T15:47:15.952371Z", "number": "29", "summary": "EPSS updated." } ], "status": "interim", "version": "29" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:semver/3.3.0|<4.5.0", "product": { "name": "vers:semver/3.3.0|<4.5.0", "product_id": "CSAFPID-8467531" } }, { "category": "product_version_range", "name": "vers:unknown/>=3.3.0|<4.5.0", "product": { "name": "vers:unknown/>=3.3.0|<4.5.0", "product_id": "CSAFPID-8505446", "product_identification_helper": { "cpe": "cpe:2.3:o:zephyrproject:zephyr:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "Zephyr" } ], "category": "vendor", "name": "Zephyrproject" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/v3.3.0", "product": { "name": "vers:unknown/v3.3.0", "product_id": "CSAFPID-5591608" } }, { "category": "product_version_range", "name": "vers:unknown/v3.4.0", "product": { "name": "vers:unknown/v3.4.0", "product_id": "CSAFPID-5591612" } }, { "category": "product_version_range", "name": "vers:unknown/v3.4.0-rc1", "product": { "name": "vers:unknown/v3.4.0-rc1", "product_id": "CSAFPID-5591613" } }, { "category": "product_version_range", "name": "vers:unknown/v3.4.0-rc2", "product": { "name": "vers:unknown/v3.4.0-rc2", "product_id": "CSAFPID-5591614" } }, { "category": "product_version_range", "name": "vers:unknown/v3.4.0-rc3", "product": { "name": "vers:unknown/v3.4.0-rc3", "product_id": "CSAFPID-5591615" } }, { "category": "product_version_range", "name": "vers:unknown/v3.5.0", "product": { "name": "vers:unknown/v3.5.0", "product_id": "CSAFPID-5596063" } }, { "category": "product_version_range", "name": "vers:unknown/v3.5.0-rc1", "product": { "name": "vers:unknown/v3.5.0-rc1", "product_id": "CSAFPID-5591640" } }, { "category": "product_version_range", "name": "vers:unknown/v3.5.0-rc2", "product": { "name": "vers:unknown/v3.5.0-rc2", "product_id": "CSAFPID-5591641" } }, { "category": "product_version_range", "name": "vers:unknown/v3.5.0-rc3", "product": { "name": "vers:unknown/v3.5.0-rc3", "product_id": "CSAFPID-5591642" } }, { "category": "product_version_range", "name": "vers:unknown/v3.6.0", "product": { "name": "vers:unknown/v3.6.0", "product_id": "CSAFPID-5596064" } }, { "category": "product_version_range", "name": "vers:unknown/v3.6.0-rc1", "product": { "name": "vers:unknown/v3.6.0-rc1", "product_id": "CSAFPID-5596065" } }, { "category": "product_version_range", "name": "vers:unknown/v3.6.0-rc2", "product": { "name": "vers:unknown/v3.6.0-rc2", "product_id": "CSAFPID-5596066" } }, { "category": "product_version_range", "name": "vers:unknown/v3.6.0-rc3", "product": { "name": "vers:unknown/v3.6.0-rc3", "product_id": "CSAFPID-5596067" } }, { "category": "product_version_range", "name": "vers:unknown/v3.7.0", "product": { "name": "vers:unknown/v3.7.0", "product_id": "CSAFPID-5596069" } }, { "category": "product_version_range", "name": "vers:unknown/v3.7.0-rc1", "product": { "name": "vers:unknown/v3.7.0-rc1", "product_id": "CSAFPID-5596070" } }, { "category": "product_version_range", "name": "vers:unknown/v3.7.0-rc2", "product": { "name": "vers:unknown/v3.7.0-rc2", "product_id": "CSAFPID-5596071" } }, { "category": "product_version_range", "name": "vers:unknown/v3.7.0-rc3", "product": { "name": "vers:unknown/v3.7.0-rc3", "product_id": "CSAFPID-5596072" } }, { "category": "product_version_range", "name": "vers:unknown/v4.0.0", "product": { "name": "vers:unknown/v4.0.0", "product_id": "CSAFPID-5604263" } }, { "category": "product_version_range", "name": "vers:unknown/v4.0.0-rc1", "product": { "name": "vers:unknown/v4.0.0-rc1", "product_id": "CSAFPID-5604264" } }, { "category": "product_version_range", "name": "vers:unknown/v4.0.0-rc2", "product": { "name": "vers:unknown/v4.0.0-rc2", "product_id": "CSAFPID-5604265" } }, { "category": "product_version_range", "name": "vers:unknown/v4.0.0-rc3", "product": { "name": "vers:unknown/v4.0.0-rc3", "product_id": "CSAFPID-5604266" } }, { "category": "product_version_range", "name": "vers:unknown/v4.1.0", "product": { "name": "vers:unknown/v4.1.0", "product_id": "CSAFPID-5604267" } }, { "category": "product_version_range", "name": "vers:unknown/v4.1.0-rc1", "product": { "name": "vers:unknown/v4.1.0-rc1", "product_id": "CSAFPID-5604268" } }, { "category": "product_version_range", "name": "vers:unknown/v4.1.0-rc2", "product": { "name": "vers:unknown/v4.1.0-rc2", "product_id": "CSAFPID-5604269" } }, { "category": "product_version_range", "name": "vers:unknown/v4.1.0-rc3", "product": { "name": "vers:unknown/v4.1.0-rc3", "product_id": "CSAFPID-5604270" } }, { "category": "product_version_range", "name": "vers:unknown/v4.2.0", "product": { "name": "vers:unknown/v4.2.0", "product_id": "CSAFPID-8566770" } }, { "category": "product_version_range", "name": "vers:unknown/v4.2.0-rc1", "product": { "name": "vers:unknown/v4.2.0-rc1", "product_id": "CSAFPID-8566773" } }, { "category": "product_version_range", "name": "vers:unknown/v4.2.0-rc2", "product": { "name": "vers:unknown/v4.2.0-rc2", "product_id": "CSAFPID-8566772" } }, { "category": "product_version_range", "name": "vers:unknown/v4.2.0-rc3", "product": { "name": "vers:unknown/v4.2.0-rc3", "product_id": "CSAFPID-8566771" } }, { "category": "product_version_range", "name": "vers:unknown/v4.3.0", "product": { "name": "vers:unknown/v4.3.0", "product_id": "CSAFPID-8570147" } }, { "category": "product_version_range", "name": "vers:unknown/v4.3.0-rc1", "product": { "name": "vers:unknown/v4.3.0-rc1", "product_id": "CSAFPID-8570150" } }, { "category": "product_version_range", "name": "vers:unknown/v4.3.0-rc2", "product": { "name": "vers:unknown/v4.3.0-rc2", "product_id": "CSAFPID-8570149" } }, { "category": "product_version_range", "name": "vers:unknown/v4.3.0-rc3", "product": { "name": "vers:unknown/v4.3.0-rc3", "product_id": "CSAFPID-8570148" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.0-rc1", "product": { "name": "vers:unknown/v4.4.0-rc1", "product_id": "CSAFPID-8570146" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.0-rc2", "product": { "name": "vers:unknown/v4.4.0-rc2", "product_id": "CSAFPID-8570145" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.0-rc3", "product": { "name": "vers:unknown/v4.4.0-rc3", "product_id": "CSAFPID-8570144" } }, { "category": "product_version_range", "name": "vers:unknown/zephyr-v3.3.0", "product": { "name": "vers:unknown/zephyr-v3.3.0", "product_id": "CSAFPID-5591638" } }, { "category": "product_version_range", "name": "vers:unknown/zephyr-v3.4.0", "product": { "name": "vers:unknown/zephyr-v3.4.0", "product_id": "CSAFPID-5591639" } }, { "category": "product_version_range", "name": "vers:unknown/zephyr-v3.5.0", "product": { "name": "vers:unknown/zephyr-v3.5.0", "product_id": "CSAFPID-5596068" } } ], "category": "product_name", "name": "zephyr" } ], "category": "vendor", "name": "zephyrproject-rtos" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-10640", "cwe": { "id": "CWE-416", "name": "Use After Free" }, "notes": [ { "category": "description", "text": "Zephyr's IPv6 Neighbor Discovery send paths (net_ipv6_send_na, net_ipv6_send_ns, net_ipv6_send_rs in subsys/net/ip/ipv6_nbr.c) updated the per-interface ICMP-sent statistics by calling net_pkt_iface(pkt) after net_send_data(pkt) had already returned successfully. On the success path the network stack owns and releases the packet's reference (the L2/driver send unrefs it, e.g. ethernet_send -> net_pkt_unref), so for a freshly allocated packet with refcount 1 the net_pkt slab block can be freed before the statistics line runs (synchronously when no TX queue thread is configured, or via a concurrent TX thread otherwise).\n\nThe subsequent net_pkt_iface(pkt) reads pkt->iface from the freed slab block, and with CONFIG_NET_STATISTICS_PER_INTERFACE enabled that loaded pointer is dereferenced to increment iface->stats.icmp.sent, a use-after-free (CWE-416). If the slab block was reallocated in the meantime the read/increment targets unrelated or attacker-influenced memory, yielding corrupted statistics, a fault/crash (denial of service), or potential limited memory corruption.\n\nThe vulnerable Neighbor Advertisement path is reachable by any unauthenticated on-link node simply by sending ICMPv6 Neighbor Solicitations to a Zephyr node with native IPv6 enabled (handle_ns_input -> net_ipv6_send_na).\n\nAffected from v3.3.0 through v4.4.0; the fix uses the already-available iface argument instead of touching the sent packet. Configurations without per-interface statistics dereference only a global counter and are not affected by the memory-safety aspect.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/10xxx/CVE-2026-10640.json" }, { "category": "description", "text": "Zephyr's IPv6 Neighbor Discovery send paths (net_ipv6_send_na, net_ipv6_send_ns, net_ipv6_send_rs in subsys/net/ip/ipv6_nbr.c) updated the per-interface ICMP-sent statistics by calling net_pkt_iface(pkt) after net_send_data(pkt) had already returned successfully. On the success path the network stack owns and releases the packet's reference (the L2/driver send unrefs it, e.g. ethernet_send -> net_pkt_unref), so for a freshly allocated packet with refcount 1 the net_pkt slab block can be freed before the statistics line runs (synchronously when no TX queue thread is configured, or via a concurrent TX thread otherwise).\n\nThe subsequent net_pkt_iface(pkt) reads pkt->iface from the freed slab block, and with CONFIG_NET_STATISTICS_PER_INTERFACE enabled that loaded pointer is dereferenced to increment iface->stats.icmp.sent, a use-after-free (CWE-416). If the slab block was reallocated in the meantime the read/increment targets unrelated or attacker-influenced memory, yielding corrupted statistics, a fault/crash (denial of service), or potential limited memory corruption.\n\nThe vulnerable Neighbor Advertisement path is reachable by any unauthenticated on-link node simply by sending ICMPv6 Neighbor Solicitations to a Zephyr node with native IPv6 enabled (handle_ns_input -> net_ipv6_send_na).\n\nAffected from v3.3.0 through v4.4.0; the fix uses the already-available iface argument instead of touching the sent packet. Configurations without per-interface statistics dereference only a global counter and are not affected by the memory-safety aspect.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-10640" }, { "category": "description", "text": "Zephyr's IPv6 Neighbor Discovery send paths (net_ipv6_send_na, net_ipv6_send_ns, net_ipv6_send_rs in subsys/net/ip/ipv6_nbr.c) updated the per-interface ICMP-sent statistics by calling net_pkt_iface(pkt) after net_send_data(pkt) had already returned successfully. On the success path the network stack owns and releases the packet's reference (the L2/driver send unrefs it, e.g. ethernet_send -> net_pkt_unref), so for a freshly allocated packet with refcount 1 the net_pkt slab block can be freed before the statistics line runs (synchronously when no TX queue thread is configured, or via a concurrent TX thread otherwise).\n\nThe subsequent net_pkt_iface(pkt) reads pkt->iface from the freed slab block, and with CONFIG_NET_STATISTICS_PER_INTERFACE enabled that loaded pointer is dereferenced to increment iface->stats.icmp.sent, a use-after-free (CWE-416). If the slab block was reallocated in the meantime the read/increment targets unrelated or attacker-influenced memory, yielding corrupted statistics, a fault/crash (denial of service), or potential limited memory corruption.\n\nThe vulnerable Neighbor Advertisement path is reachable by any unauthenticated on-link node simply by sending ICMPv6 Neighbor Solicitations to a Zephyr node with native IPv6 enabled (handle_ns_input -> net_ipv6_send_na).\n\nAffected from v3.3.0 through v4.4.0; the fix uses the already-available iface argument instead of touching the sent packet. Configurations without per-interface statistics dereference only a global counter and are not affected by the memory-safety aspect.", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/GIT%2FCVE-2026-10640.json?alt=media" }, { "category": "other", "text": "0.0037", "title": "EPSS" }, { "category": "other", "text": "4.0", "title": "NCSC Score" }, { "category": "other", "text": "Is related to CWE-416 (Use After Free)", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "Is related to an uncommon product vendor, Is related to (a version of) an uncommon product, There is exploit data available from source Nvd, There is cwe data available from source Nvd", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-8467531", "CSAFPID-8505446", "CSAFPID-5591608", "CSAFPID-5591612", "CSAFPID-5591613", "CSAFPID-5591614", "CSAFPID-5591615", "CSAFPID-5591638", "CSAFPID-5591639", "CSAFPID-5591640", "CSAFPID-5591641", "CSAFPID-5591642", "CSAFPID-5596063", "CSAFPID-5596064", "CSAFPID-5596065", "CSAFPID-5596066", "CSAFPID-5596067", "CSAFPID-5596068", "CSAFPID-5596069", "CSAFPID-5596070", "CSAFPID-5596071", "CSAFPID-5596072", "CSAFPID-5604263", "CSAFPID-5604264", "CSAFPID-5604265", "CSAFPID-5604266", "CSAFPID-5604267", "CSAFPID-5604268", "CSAFPID-5604269", "CSAFPID-5604270", "CSAFPID-8566770", "CSAFPID-8566771", "CSAFPID-8566772", "CSAFPID-8566773", "CSAFPID-8570144", "CSAFPID-8570145", "CSAFPID-8570146", "CSAFPID-8570147", "CSAFPID-8570148", "CSAFPID-8570149", "CSAFPID-8570150" ] }, "references": [ { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/10xxx/CVE-2026-10640.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-10640" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/GIT%2FCVE-2026-10640.json?alt=media" }, { "category": "external", "summary": "Source - ncscclear", "url": "https://vulnerabilities.ncsc.nl/manual/CVE-2026-10640" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; osv", "url": "https://github.com/zephyrproject-rtos/zephyr/commit/aaed8332a62b0490a2f3c2cbabe272f575068eaa" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; osv", "url": "https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-r74c-mr4m-7g9g" }, { "category": "external", "summary": "Reference - osv", "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10640.json" }, { "category": "external", "summary": "Reference - osv", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-10640" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L", "baseScore": 4.2, "baseSeverity": "MEDIUM" }, "products": [ "CSAFPID-5591608", "CSAFPID-5591612", "CSAFPID-5591613", "CSAFPID-5591614", "CSAFPID-5591615", "CSAFPID-5591638", "CSAFPID-5591639", "CSAFPID-5591640", "CSAFPID-5591641", "CSAFPID-5591642", "CSAFPID-5596063", "CSAFPID-5596064", "CSAFPID-5596065", "CSAFPID-5596066", "CSAFPID-5596067", "CSAFPID-5596068", "CSAFPID-5596069", "CSAFPID-5596070", "CSAFPID-5596071", "CSAFPID-5596072", "CSAFPID-5604263", "CSAFPID-5604264", "CSAFPID-5604265", "CSAFPID-5604266", "CSAFPID-5604267", "CSAFPID-5604268", "CSAFPID-5604269", "CSAFPID-5604270", "CSAFPID-8467531", "CSAFPID-8505446", "CSAFPID-8566770", "CSAFPID-8566771", "CSAFPID-8566772", "CSAFPID-8566773", "CSAFPID-8570144", "CSAFPID-8570145", "CSAFPID-8570146", "CSAFPID-8570147", "CSAFPID-8570148", "CSAFPID-8570149", "CSAFPID-8570150" ] } ], "title": "CVE-2026-10640" } ] }