Malformed Wi-Fi Beacon Causes Crash on WF200
- Exploited
- No known exploitation
- Fix
- Fixed in 3.18.0 or later
- Who is exposed
- Not reported
Do first: Upgrade to a fixed version: 3.18.0 or later.
- Last modified
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 7/100 · provisional
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Unclear
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
The WF200 router's firmware has a flaw in how it handles Wi-Fi beacon frames that can crash the device. An attacker within radio range can send a specially malformed beacon, without logging in or any user action, to make the device fail and stop working.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
Read the original 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.
cve.now Index
- Exploitation0/40No signal
- Exposure?/25Unknown. Advisories don't say whether default setups are affected
- Reach?/20Unknown. No tracked technology or package matched
- Severity7.1/10CVSS 7.1
- No patch0/5No signal
What would change the score
- Would score about 62 if added to CISA KEV
- Would score about 57 if CISA's SSVC rates exploitation active
- Would score about 29 if advisories confirm default setups are exposed
What to do
Upgrade to a fixed version: 3.18.0 or later.
Timeline
- CVE published
- First seen by cve.now
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Silicon Labs WF200 FW
through 3.17.0
Evidence 1
- Advisory
Corrections
None so far.
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Questions about CVE-2026-107359
Is CVE-2026-107359 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
What does this mean?
A malformed Wi-Fi beacon received by a WF200 device can cause a fault. The fault crashes the device, which stops working until it is reset.Source: github.com
Which versions are affected by CVE-2026-107359?
WF200 FW: through 3.17.0.Source: cve.now feed data
Am I affected, and how do I check?
WF200 FW version 3.17.0 and earlier are affected. To check, look up the firmware version the WF200 device is running and compare it with 3.17.0.Source: github.com
How do I fix CVE-2026-107359?
Update WF200 firmware to version 3.18.0 or later, which fixes the issue.Source: github.com