Vulnerability in Zephyrproject Zephyr
CVE-2026-7656
The IPv6 Neighbor Discovery handlers in subsys/net/ip/ipv6_nbr.c (handle_ra_input, handle_ns_input, handle_na_input) used an incorrect boolean expression that combined the RFC 4861 validity checks with the ICMPv6 code check using the wrong…
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.
Affected products
- Zephyrproject Zephyr — versions 1.14.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-7656?
- CVE-2026-7656 is a high-severity vulnerability in Zephyrproject Zephyr, classified under Authentication Bypass by Spoofing. CVSS score: 8.1/10. Published 2026-06-29.
- How severe is CVE-2026-7656?
- High severity. CVSS v3 base score is 8.1 out of 10.