CVE-2024-40086Public exploit

Adjacent-network code execution via oversized Wi-Fi password

Published Oct 21, 2024 · Updated Jul 5, 2026

Buffer overflow in Vilo Wi-Fi 5 Firmware 5.16.1.33 and earlier allows remote attackers to execute code through an oversized Wi-Fi password. local_app_set_router_wifi_SSID_PWD measures the JSON password with strlen() and passes that length to memcpy() for a fixed 64-byte stack buffer. Access to the router's LAN and custom encrypted service on port 5432 is required; exploitation corrupts the stack and grants router code execution.

CVSS severity9.6
Critical
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Vilo Wi-Fi 5 Firmware 5.16.1.33 and earlier allows remote attackers to execute code through an oversized Wi-Fi password. local_app_set_router_wifi_SSID_PWD measures the JSON password with strlen() and passes that length to memcpy() for a fixed 64-byte stack buffer. Access to the router's LAN and custom encrypted service on port 5432 is required; exploitation corrupts the stack and grants router code execution.

The record

CVE
CVE-2024-40086
Published
Oct 21, 2024
Updated
Jul 5, 2026
Vendor
Vilo Living
Product
Vilo Wi-Fi 5 Firmware
Classifications
CWE-120, T1190
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Jul 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=5.16.1.33

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Vilo Living · Vilo Wi-Fi 5 Firmwareversion=0 <=5.16.1.33

Published CVSS scores

9.6CISA-ADPCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1190Exploit Public-Facing Application

Public exploit references

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Technologies

Your stack

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Your stack

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