CVE-2024-40091Public exploit

Sensitive log disclosure via unauthenticated support webserver

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 retrieve sensitive logs from Boa. The support server on port 8023 exposes a downloadable encrypted log without authenticating requests, and a hard-coded XOR key recovers its contents. The server is off by default, but local-network users can read process lists, MAC addresses, MQTT logs, and Wi-Fi information whenever it is exposed.

CVSS severity5.3
Medium
EPSS probability0.38%
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 retrieve sensitive logs from Boa. The support server on port 8023 exposes a downloadable encrypted log without authenticating requests, and a hard-coded XOR key recovers its contents. The server is off by default, but local-network users can read process lists, MAC addresses, MQTT logs, and Wi-Fi information whenever it is exposed.

The record

CVE
CVE-2024-40091
Published
Oct 21, 2024
Updated
Jul 5, 2026
Vendor
Vilo Living
Product
Vilo Wi-Fi 5 Firmware
Classifications
CWE-306, T1005
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

5.3CISA-ADPCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1005Data from Local System

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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