What is CVE-2021-3436?

CVE-2021-3436 is a medium-severity vulnerability in Zephyrproject-rtos Zephyr, classified under Use of Multiple Resources with Duplicate Identifier. CVSS score: 4.3/10. Published 2021-10-05.

How severe is CVE-2021-3436?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Zephyrproject-rtos Zephyr

CVE-2021-3436

BT: Possible to overwrite an existing bond during keys distribution phase when the identity address of the bond is known. Zephyr versions >= 1.14.2, >= 2.4.0, >= 2.5.0 contain Use of Multiple Resources with Duplicate Identifier (CWE-694)…

EPSS: 0.003 (54.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Zephyrproject-rtos Zephyr — versions 1.14.2, 2.4.0, 2.5.0

Weakness classification (CWE)

CWE-694 — Use of Multiple Resources with Duplicate Identifier

References

github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-j76f-35mc-4h63 (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-3436?: CVE-2021-3436 is a medium-severity vulnerability in Zephyrproject-rtos Zephyr, classified under Use of Multiple Resources with Duplicate Identifier. CVSS score: 4.3/10. Published 2021-10-05.
How severe is CVE-2021-3436?: Medium severity. CVSS v3 base score is 4.3 out of 10.