CVE-2026-1679

EUVD-2026-16903
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.
Classic Buffer Overflow
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.3 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 16%
Affected Products (NVD)
VendorProductVersion
zephyrprojectzephyr
𝑥
≤ 4.3.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-qx3g-5g22-fq5w