What is CVE-2021-27697?

CVE-2021-27697 is a critical-severity vulnerability in Riot-Os Riot, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2021-04-06.

How severe is CVE-2021-27697?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Riot-Os Riot

CVE-2021-27697

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.

Vulnerability class: Buffer Overflow

EPSS: 0.013 (66.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Riot-os Riot — versions 2021.01
N/a — versions n/a

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-27697?: CVE-2021-27697 is a critical-severity vulnerability in Riot-Os Riot, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2021-04-06.
How severe is CVE-2021-27697?: Critical severity. CVSS v3 base score is 9.8 out of 10.