What is CVE-2021-3330?

CVE-2021-3330 is a high-severity vulnerability in Zephyrproject Zephyr, classified under Out-of-bounds Write. CVSS score: 7.1/10. Published 2021-10-12.

How severe is CVE-2021-3330?

High severity. CVSS v3 base score is 7.1 out of 10.

Buffer overflow in Zephyrproject Zephyr

CVE-2021-3330

RCE/DOS: Linked-list corruption leading to large out-of-bounds write while sorting for forged fragment list in Zephyr. Zephyr versions >= >=2.4.0 contain Out-of-bounds Write (CWE-787). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-fj4r-373f-9456

Vulnerability class: Buffer Overflow

EPSS: 0.006 (44.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L.

Affected products

Zephyrproject Zephyr
Zephyrproject-rtos Zephyr — versions >=2.4.0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

vulnerabilities@zephyrproject.org (Exploit, Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-3330?: CVE-2021-3330 is a high-severity vulnerability in Zephyrproject Zephyr, classified under Out-of-bounds Write. CVSS score: 7.1/10. Published 2021-10-12.
How severe is CVE-2021-3330?: High severity. CVSS v3 base score is 7.1 out of 10.