CVE-2021-27697

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-04-06 · updated 2026-06-17
Weakness: CWE-120

Description

RIOT-OS 2021.01 contains a buffer overflow vulnerability in sys/net/gnrc/routing/rpl/gnrc_rpl_validation.c through the gnrc_rpl_validation_options() function.

Affected products

RIOT-OS RIOT: 2021.01

References

https://github.com/RIOT-OS/RIOT/issues/16062
https://github.com/RIOT-OS/RIOT/issues/16062

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