Description
Improper input validation in the beacon handler for WF200 firmware versions 3.17.0 and earlier may result in a divide-by-zero fault.
Published: 2026-11-05
Score: 7.1 High
EPSS: n/a
KEV: No
Impact: Denial of Service (device crash)
Action: Upgrade Firmware
AI Analysis

Impact

Improper input validation in the Wi‑Fi beacon handler of Silicon Labs WF200 firmware can trigger a divide‑by‑zero fault. When a malformed beacon is processed the device experiences a fatal crash, temporarily disabling its networking functions. The CVSS score of 7.1 reflects a high impact on availability, with no direct compromise of data confidentiality or integrity.

Affected Systems

The issue affects Silicon Labs' WF200 family running firmware version 3.17.0 and earlier. No other product versions are listed as impacted.

Risk and Exploitability

The CVSS score indicates a significant risk of denial of service. The EPSS score is not available and the vulnerability is not catalogued in CISA KEV, suggesting that it has not yet been widely abused. The likely attack vector is remote, as an adversary can broadcast a crafted beacon over the air to the target device, causing it to crash. As long as the unpatched firmware is in use, the device remains susceptible.

Generated by OpenCVE AI on November 5, 2026 at 18:20 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade the WF200 firmware to a version newer than 3.17.0 that addresses the divide‑by‑zero bug.
  • Configure network devices or firewall rules to filter or block malformed beacon frames from external sources, reducing the attack surface while the device remains in service.
  • Continuously monitor device logs for crash events or abnormal resets and verify that recovery mechanisms are functioning properly.

Generated by OpenCVE AI on November 5, 2026 at 18:20 UTC.

Tracking

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Advisories

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History

Thu, 05 Nov 2026 17:45:00 +0000

Type Values Removed Values Added
Description Improper input validation in the beacon handler for WF200 firmware versions 3.17.0 and earlier may result in a divide-by-zero fault.
Title Malformed Wi-Fi Beacon Causes Crash on WF200
Weaknesses CWE-369
References
Metrics cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: Silabs

Published:

Updated: 2026-11-05T17:37:53.645Z

Reserved: 2026-10-07T20:04:14.997Z

Link: CVE-2026-107359

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-05T18:17:00.370

Modified: 2026-11-05T18:17:00.370

Link: CVE-2026-107359

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-05T18:30:17Z

Weaknesses