What is CVE-2023-6749?

CVE-2023-6749 is a high-severity vulnerability in Zephyrproject Zephyr, classified under Stack-based Buffer Overflow. CVSS score: 8.0/10. Published 2024-02-18.

How severe is CVE-2023-6749?

High severity. CVSS v3 base score is 8.0 out of 10.

Buffer overflow in Zephyrproject Zephyr

CVE-2023-6749

Unchecked length coming from user input in settings shell

Vulnerability class: Buffer Overflow

Published 2024-02-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (35.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Weakness classification (CWE)

References

github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-757h-rw37-66hw (Exploit, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2023-6749?: CVE-2023-6749 is a high-severity vulnerability in Zephyrproject Zephyr, classified under Stack-based Buffer Overflow. CVSS score: 8.0/10. Published 2024-02-18.
How severe is CVE-2023-6749?: High severity. CVSS v3 base score is 8.0 out of 10.