CVE-2024-40087

Unauthenticated router administration via custom TCP service

Published Oct 21, 2024 · Updated Jul 5, 2026

Missing authentication in Vilo Living Vilo Wi-Fi 5 Firmware 5.16.1.33 and earlier allows remote attackers to gain router administration over LAN. The custom TCP service on port 5432 accepts XXTEA-encrypted application commands without authenticating the sender as the Vilo app. Any attacker connected to the router LAN can read or change sensitive settings, including Wi-Fi and PPPoE credentials, and reboot the router.

CVSS severity9.6
Critical
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Vilo Living Vilo Wi-Fi 5 Firmware 5.16.1.33 and earlier allows remote attackers to gain router administration over LAN. The custom TCP service on port 5432 accepts XXTEA-encrypted application commands without authenticating the sender as the Vilo app. Any attacker connected to the router LAN can read or change sensitive settings, including Wi-Fi and PPPoE credentials, and reboot the router.

The record

CVE
CVE-2024-40087
Published
Oct 21, 2024
Updated
Jul 5, 2026
Vendor
Vilo Living
Product
Vilo Wi-Fi 5 Firmware
Classifications
CWE-306, T1210
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

9.6CISACVSS: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

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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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 exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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