P4Verified

CVE-2026-10648: zephyr 4.4.0

CVE-2026-10648. CVSS 3.1 base score 5.5 (MEDIUM, NVD). EPSS 0.00153 (percentile 0.03953), scored 14-Oct-2026.

Affected technology

zephyr · 4.4.0
zephyrproject

zephyr · 4.4.0 · update rc1
zephyrproject

zephyr · 4.4.0 · update rc2
zephyrproject

zephyr · 4.4.0 · update rc3
zephyrproject

zephyr · 4.4.0 to before 4.4.1
zephyrproject

Description’s affected range: before checking it for NULL. smp_packet_alloc() uses net_buf_alloc(K_NO_WAIT) against the shared MCUmgr packet pool (CONFIG_MCUMGR_TRANSPORT_NETBUF_COUNT

Component: Not specified by the source
File: subsys/mgmt/mcumgr/transport/src/serial_util.c

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

Attack conditions (NVD, CVSS 3.1): Local · Low 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 6.2/10) rates confidentiality and integrity impact as none; availability impact as high. NVD’s CVSS 3.1 assessment (base score 5.5/10) rates confidentiality and integrity impact as none; availability impact as high.

Published 15-Oct-2026 23:47 UTC

CWE: CWE-476
CCR priority: 22.0 /100 (P4)
CVSS 3.1: 5.5 /10 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · NVD
EPSS: 0.00153 · percentile 0.03953 · 2026-10-14
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-15 23:47:27.763190+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-10648.html