{"api_version":"1","generated_at":"2026-05-13T08:50:27+00:00","cve":"CVE-2022-35926","urls":{"html":"https://cve.report/CVE-2022-35926","api":"https://cve.report/api/cve/CVE-2022-35926.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2022-35926","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-35926"},"summary":{"title":"CVE-2022-35926","description":"Contiki-NG is an open-source, cross-platform operating system for IoT devices. Because of insufficient validation of IPv6 neighbor discovery options in Contiki-NG, attackers can send neighbor solicitation packets that trigger an out-of-bounds read. The problem exists in the module os/net/ipv6/uip-nd6.c, where memory read operations from the main packet buffer, <code>uip_buf</code>, are not checked if they go out of bounds. In particular, this problem can occur when attempting to read the 2-byte option header and the Source Link-Layer Address Option (SLLAO). This attack requires ipv6 be enabled for the network. The problem has been patched in the develop branch of Contiki-NG. The upcoming 4.8 release of Contiki-NG will include the patch.Users unable to upgrade may apply the patch in Contiki-NG PR #1654.","state":"PUBLIC","assigner":"security-advisories@github.com","published_at":"2022-08-04 21:15:00","updated_at":"2022-08-11 14:14:00"},"problem_types":["CWE-125"],"metrics":[],"references":[{"url":"https://github.com/contiki-ng/contiki-ng/pull/1654","name":"https://github.com/contiki-ng/contiki-ng/pull/1654","refsource":"MISC","tags":[],"title":"uip-nd6: Check buffer space for ND6 option headers. by nvt · Pull Request #1654 · contiki-ng/contiki-ng · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.8","name":"https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.8","refsource":"MISC","tags":[],"title":"Release Version 4.8 · contiki-ng/contiki-ng · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-4hpq-4f53-w386","name":"https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-4hpq-4f53-w386","refsource":"CONFIRM","tags":[],"title":"Out-of-bounds read in IPv6 neighbor solicitation · Advisory · contiki-ng/contiki-ng · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/contiki-ng/contiki-ng/pull/1654/commits/a4597001d50a04f4b9c78f323ba731e2f979802c","name":"https://github.com/contiki-ng/contiki-ng/pull/1654/commits/a4597001d50a04f4b9c78f323ba731e2f979802c","refsource":"MISC","tags":[],"title":"uip-nd6: Check buffer space for ND6 option headers. by nvt · Pull Request #1654 · contiki-ng/contiki-ng · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2022-35926","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-35926","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2022","cve_id":"35926","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"contiki-ng","cpe5":"contiki-ng","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"security-advisories@github.com","ID":"CVE-2022-35926","STATE":"PUBLIC","TITLE":"Out-of-bounds read in IPv6 neighbor solicitation in Contiki-NG"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"contiki-ng","version":{"version_data":[{"version_value":"< 4.8"}]}}]},"vendor_name":"contiki-ng"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Contiki-NG is an open-source, cross-platform operating system for IoT devices. 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The upcoming 4.8 release of Contiki-NG will include the patch.Users unable to upgrade may apply the patch in Contiki-NG PR #1654."}]},"impact":{"cvss":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":5.9,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-125: Out-of-bounds Read"}]}]},"references":{"reference_data":[{"name":"https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.8","refsource":"MISC","url":"https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.8"},{"name":"https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-4hpq-4f53-w386","refsource":"CONFIRM","url":"https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-4hpq-4f53-w386"},{"name":"https://github.com/contiki-ng/contiki-ng/pull/1654","refsource":"MISC","url":"https://github.com/contiki-ng/contiki-ng/pull/1654"},{"name":"https://github.com/contiki-ng/contiki-ng/pull/1654/commits/a4597001d50a04f4b9c78f323ba731e2f979802c","refsource":"MISC","url":"https://github.com/contiki-ng/contiki-ng/pull/1654/commits/a4597001d50a04f4b9c78f323ba731e2f979802c"}]},"source":{"advisory":"GHSA-4hpq-4f53-w386","discovery":"UNKNOWN"}},"nvd":{"publishedDate":"2022-08-04 21:15:00","lastModifiedDate":"2022-08-11 14:14:00","problem_types":["CWE-125"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:contiki-ng:contiki-ng:*:*:*:*:*:*:*:*","versionEndExcluding":"4.8","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}