CVE-2026-1679

HIGH
2026-03-28 [email protected]
7.3
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 28, 2026 - 00:22 vuln.today
CVE Published
Mar 28, 2026 - 00:16 nvd
HIGH 7.3

Tags

Buffer Overflow

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.

Analysis

Buffer overflow in Zephyr RTOS eswifi socket offload driver allows authenticated local attackers to corrupt kernel memory through oversized socket send operations. The vulnerability enables privilege escalation and denial of service via heap corruption, with high integrity and availability impact. …

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Remediation

Within 24 hours: Inventory all Zephyr RTOS deployments using eswifi socket offload functionality and assess exposure to authenticated local users. Within 7 days: Implement network segmentation to restrict untrusted application access to socket APIs and apply OS-level privilege restrictions where feasible. …

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Priority Score

37
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +36
POC: 0

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CVE-2026-1679 vulnerability details – vuln.today
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