What is CVE-2021-38386?

CVE-2021-38386 is a high-severity vulnerability in Contiki-os Contiki, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2021-08-10.

How severe is CVE-2021-38386?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Contiki-os Contiki

CVE-2021-38386

In Contiki 3.0, a buffer overflow in the Telnet service allows remote attackers to cause a denial of service because the ls command is mishandled when a directory has many files with long names.

Vulnerability class: Buffer Overflow

EPSS: 0.013 (67.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Contiki-os Contiki — versions 3.0
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-2021-38386?: CVE-2021-38386 is a high-severity vulnerability in Contiki-os Contiki, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2021-08-10.
How severe is CVE-2021-38386?: High severity. CVSS v3 base score is 7.5 out of 10.