CVE-2024-40085Public exploit

Code execution via unchecked PPPoE credential copies

Published Oct 21, 2024 · Updated Jul 5, 2026

Buffer overflow in Vilo 5 Mesh WiFi System firmware 5.16.1.33 and earlier allows remote attackers on the LAN to execute arbitrary code. local_app_set_router_wan decodes and XORs PPPoE credentials, then copies their full unchecked lengths into separate 128-byte stack buffers. Access to the router's LAN service on port 5432 is required; oversized credentials corrupt the stack and execute code in the router context.

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 5 Mesh WiFi System firmware 5.16.1.33 and earlier allows remote attackers on the LAN to execute arbitrary code. local_app_set_router_wan decodes and XORs PPPoE credentials, then copies their full unchecked lengths into separate 128-byte stack buffers. Access to the router's LAN service on port 5432 is required; oversized credentials corrupt the stack and execute code in the router context.

The record

CVE
CVE-2024-40085
Published
Oct 21, 2024
Updated
Jul 5, 2026
Vendor
Vilo Living
Product
Vilo Wi-Fi 5 Firmware
Classifications
CWE-120, 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

9.6CISA-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

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 exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1210Exploitation of Remote Services

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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