What is CVE-2026-10646?

CVE-2026-10646 is a high-severity vulnerability in Zephyrproject Zephyr, classified under Use After Free. CVSS score: 7.4/10. Published 2026-06-28.

How severe is CVE-2026-10646?

High severity. CVSS v3 base score is 7.4 out of 10.

Use After Free in Zephyrproject Zephyr

CVE-2026-10646

Zephyr's BSD-sockets getaddrinfo() implementation (subsys/net/lib/sockets/getaddrinfo.c) passes a pointer to a stack-allocated state object (struct getaddrinfo_state ai_state) as the user_data of an asynchronous DNS resolver query. The soc…

Vulnerability class: Use-After-Free

EPSS: 0.003 (16.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H.

Affected products

Zephyrproject Zephyr — versions 4.0.0

Weakness classification (CWE)

CWE-416 — Use After Free

References

vulnerabilities@zephyrproject.org (patch)
vulnerabilities@zephyrproject.org

Frequently asked questions

What is CVE-2026-10646?: CVE-2026-10646 is a high-severity vulnerability in Zephyrproject Zephyr, classified under Use After Free. CVSS score: 7.4/10. Published 2026-06-28.
How severe is CVE-2026-10646?: High severity. CVSS v3 base score is 7.4 out of 10.