What is CVE-2021-3433?

CVE-2021-3433 is a medium-severity vulnerability in Zephyrproject Zephyr, classified under CWE-703. CVSS score: 4.0/10. Published 2022-06-28.

How severe is CVE-2021-3433?

Medium severity. CVSS v3 base score is 4.0 out of 10.

Vulnerability in Zephyrproject Zephyr

CVE-2021-3433

Invalid channel map in CONNECT_IND results to Deadlock. Zephyr versions >= v2.5.0 Improper Check or Handling of Exceptional Conditions (CWE-703). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-3c2f-w4v6-qxrp

EPSS: 0.002 (10.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Zephyrproject Zephyr
Zephyrproject-rtos Zephyr — versions v2.5.0

Weakness classification (CWE)

CWE-703

References

vulnerabilities@zephyrproject.org (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-3433?: CVE-2021-3433 is a medium-severity vulnerability in Zephyrproject Zephyr, classified under CWE-703. CVSS score: 4.0/10. Published 2022-06-28.
How severe is CVE-2021-3433?: Medium severity. CVSS v3 base score is 4.0 out of 10.