P4Verified

CVE-2025-9557: Zephyr * to before 4.2.2

CVE-2025-9557. CVSS 3.1 base score 7.6 (HIGH, Vendor/CNA). EPSS 0.00208 (percentile 0.10038), scored 12-Oct-2026.

Affected technology

Zephyr · * to before 4.2.2
zephyrproject-rtos

Component: Not specified by the source

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

What an attacker can do

The source reports that an attacker could run attacker-chosen code. Vendor/CNA’s CVSS 3.1 assessment (base score 7.6/10) rates confidentiality and integrity impact as low; availability impact as high.

Published 14-Oct-2026 05:22 UTC

CWE: CWE-120
CCR priority: 30.5 /100 (P4)
CVSS 3.1: 7.6 /10 · CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H · Vendor/CNA
EPSS: 0.00208 · percentile 0.10133 · 2026-10-13
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-14 05:24:14.258005+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-14 05:19:44.455882+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2025-9557.html