CVE-2026-10686: zephyr from 1.8.0 (inclusive), before 4.5.0 (exclusive), 1.8.0 to before 4.3.1, 4.4.0 to before 4.4.2

Affected technology

zephyr · from 1.8.0 (inclusive), before 4.5.0 (exclusive)
zephyrproject

zephyr · 1.8.0 to before 4.3.1, 4.4.0 to before 4.4.2
zephyrproject

Component: Not specified by the source
File: subsys/net/ip/ipv4.c, subsys/net/ip/ipv6.c, subsys/net/ip/route.c, subsys/net/ip/route_ipv4.c, subsys/net/ip/route_ipv6.c

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

Attack conditions (NVD, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Vendor/CNA’s CVSS 3.1 assessment (base score 5.8/10) rates confidentiality and integrity impact as none; availability impact as low. NVD’s CVSS 3.1 assessment (base score 7.5/10) rates confidentiality and integrity impact as none; availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.