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P4Verified

CVE-2026-10666: zephyr from 1.9.0 (inclusive), through 4.4.1 (inclusive), 1.9.0 to before 4.3.1, 4.4.0 to before 4.4.1

CVE-2026-10666. CVSS 3.1 base score 9.8 (CRITICAL, NVD). EPSS 0.00654 (percentile 0.50168), scored 14-Oct-2026.

Affected technology

zephyr · from 1.9.0 (inclusive), through 4.4.1 (inclusive)
zephyrproject

zephyr · 1.9.0 to before 4.3.1, 4.4.0 to before 4.4.1
zephyrproject

Component: Not specified by the source
File: subsys/net/ip/utils.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

The source reports that an attacker could disrupt service under the conditions described by the source. Vendor/CNA’s CVSS 3.1 assessment (base score 8.1/10) rates confidentiality, integrity and availability impact as high. NVD’s CVSS 3.1 assessment (base score 9.8/10) rates confidentiality, integrity and availability impact as high.

Published

CWE
CWE-121
CCR priority
39.4 /100 (P4)
CVSS 3.1
9.8 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · NVD
EPSS
0.00654 · percentile 0.50168 · 2026-10-14
KEV
no

Provenance

Stable permalink: https://cybercodered.org/item/cve-cve-2026-10666.html