cvedb.io
CVE-2021-38311
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2021-08-09T22:15:08.733 · Last modified 2026-06-17T04:01:50.587

Summary

In Contiki 3.0, potential nonterminating acknowledgment loops exist in the Telnet service. When the negotiated options are already disabled, servers still respond to DONT and WONT requests with WONT or DONT commands, which may lead to infinite acknowledgment loops, denial of service, and excessive CPU consumption.

Affected products

contiki-os — contiki

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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.