Description
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.
Scores
CVSS v3
7.3
EPSS
0.0005
EPSS Percentile
15.9%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-120
Status
published
Products (2)
zephyrproject/zephyr
< 4.3.0
zephyrproject-rtos/Zephyr
< 4.3
Published
Mar 28, 2026
Tracked Since
Mar 29, 2026