What is CVE-2026-5071?

CVE-2026-5071 is a medium-severity vulnerability in Zephyrproject-rtos Zephyr, classified under Out-of-bounds Read. CVSS score: 6.1/10. Published 2026-05-30.

How severe is CVE-2026-5071?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Out-of-bounds Read in Zephyrproject-rtos Zephyr

CVE-2026-5071

The SocketCAN implementation validates the length of a user-provided buffer containing a socketcan_frame object using only a NET_ASSERT statement in zcan_sendto_ctx() before dereferencing it in socketcan_to_can_frame(). In production build…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (1.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H.

Affected products

Zephyrproject-rtos Zephyr

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

vulnerabilities@zephyrproject.org

Frequently asked questions

What is CVE-2026-5071?: CVE-2026-5071 is a medium-severity vulnerability in Zephyrproject-rtos Zephyr, classified under Out-of-bounds Read. CVSS score: 6.1/10. Published 2026-05-30.
How severe is CVE-2026-5071?: Medium severity. CVSS v3 base score is 6.1 out of 10.