cvedb.io
CVE-2021-32771
HIGH · CVSS 8.1
EPSS exploitation probability: 0%
Published 2022-08-04T21:15:07.907 · Last modified 2026-06-17T03:53:35.790

Summary

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.

Affected products

contiki-ng — contiki-ng

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.