CVE-2026-1679 HIGH

CVE-2026-1679: net: eswifi socket send payload length not bounded

Vendor Zephyrproject-Rtos
Product Zephyr
Weakness CWE-120
Published March 27, 2026
Last update April 1, 2026

CVSS base score

7.3/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H

What the vulnerability does

01Description

The eswifi socket offload driver copies user-provided payloads into a fixed buffer without checking available space; oversized sends overflow `eswifi->buf`, corrupting kernel memory (CWE-120). Exploit requires local code that can call the socket send API; no remote attacker can reach it directly.

Key dates

02Disclosure timeline

March 27, 2026 CVE published
April 1, 2026 Record updated