{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-05T00:09:50.264","vulnerabilities":[{"cve":{"id":"CVE-2021-32771","sourceIdentifier":"security-advisories@github.com","published":"2022-08-04T21:15:07.907","lastModified":"2024-11-21T06:07:42.533","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"Contiki-NG is an open-source, cross-platform operating system for IoT devices. In affected versions it is possible to cause a buffer overflow when copying an IPv6 address prefix in the RPL-Classic implementation in Contiki-NG. In order to trigger the vulnerability, the Contiki-NG system must have joined an RPL DODAG. After that, an attacker can send a DAO packet with a Target option that contains a prefix length larger than 128 bits. The problem was fixed after the release of Contiki-NG 4.7. Users unable to upgrade may apply the patch in Contiki-NG PR #1615."},{"lang":"es","value":"Contiki-NG es un sistema operativo de código abierto y multiplataforma para dispositivos IoT. En las versiones afectadas es posible causar un desbordamiento de búfer cuando es copiado un prefijo de dirección IPv6 en la implementación RPL-Classic en Contiki-NG. Para desencadenar la vulnerabilidad, el sistema Contiki-NG debe haberse unido a un DODAG RPL. Después, un atacante puede enviar un paquete DAO con una opción Target que contenga una longitud de prefijo superior a 128 bits. El problema ha sido solucionado tras el lanzamiento de Contiki-NG versión 4.7. Los usuarios que no puedan actualizar pueden aplicar el parche en Contiki-NG PR #1615"}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.2,"impactScore":5.9},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.2,"impactScore":5.9}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-120"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:contiki-ng:contiki-ng:*:*:*:*:*:*:*:*","versionEndExcluding":"4.8","matchCriteriaId":"8753C87C-46B4-467B-9598-30E562D5CB38"}]}]}],"references":[{"url":"https://github.com/contiki-ng/contiki-ng/pull/1615","source":"security-advisories@github.com","tags":["Patch","Third Party Advisory"]},{"url":"https://github.com/contiki-ng/contiki-ng/pull/1615/commits/587ae59956e00316fd44fd7072ac3a6a07b4b20f","source":"security-advisories@github.com","tags":["Patch","Third Party Advisory"]},{"url":"https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.8","source":"security-advisories@github.com","tags":["Third Party Advisory"]},{"url":"https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-jqjf-v7v9-xp6w","source":"security-advisories@github.com","tags":["Third Party Advisory"]},{"url":"https://github.com/contiki-ng/contiki-ng/pull/1615","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"]},{"url":"https://github.com/contiki-ng/contiki-ng/pull/1615/commits/587ae59956e00316fd44fd7072ac3a6a07b4b20f","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"]},{"url":"https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.8","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]},{"url":"https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-jqjf-v7v9-xp6w","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]}]}}]}