What is CVE-2026-10658?

CVE-2026-10658 is a high-severity vulnerability in Zephyrproject Zephyr, classified under Out-of-bounds Write. CVSS score: 7.1/10. Published 2026-06-23.

How severe is CVE-2026-10658?

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

Buffer overflow in Zephyrproject Zephyr

CVE-2026-10658

bt_iso_recv() in subsys/bluetooth/host/iso.c pulled the ISO SDU header (4 bytes) or, when the timestamp flag is set, the timestamped SDU header (8 bytes) from the inbound HCI ISO Data buffer via net_buf_pull_mem() without first checking bu…

Vulnerability class: Buffer Overflow

EPSS: 0.002 (7.0th 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:U/C:L/I:N/A:H.

Affected products

Zephyrproject Zephyr — versions 2.6.0
Zephyrproject-rtos Zephyr

Weakness classification (CWE)

References

vulnerabilities@zephyrproject.org (Patch, Issue Tracking, Vendor Advisory)
vulnerabilities@zephyrproject.org (patch)

Frequently asked questions

What is CVE-2026-10658?: CVE-2026-10658 is a high-severity vulnerability in Zephyrproject Zephyr, classified under Out-of-bounds Write. CVSS score: 7.1/10. Published 2026-06-23.
How severe is CVE-2026-10658?: High severity. CVSS v3 base score is 7.1 out of 10.