CVE-2024-39181Public exploit

Service interruption via unchecked ApCliSsid length

Published Jul 9, 2024 · Updated Nov 20, 2024

Buffer overflow in Shenzhen Libituo LBT-T300-T400 firmware 3.2 allows remote attackers to interrupt service via a crafted POST request. The /apply.cgi handler passes an overlong ApCliSsid value into generate_conf_router() without enforcing a data-length limit, overflowing a buffer. The request must reach the router from an adjacent network; the disclosed consequence is limited to denial of service.

CVSS severity6.5
Medium
EPSS probability0.50%
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 Shenzhen Libituo LBT-T300-T400 firmware 3.2 allows remote attackers to interrupt service via a crafted POST request. The /apply.cgi handler passes an overlong ApCliSsid value into generate_conf_router() without enforcing a data-length limit, overflowing a buffer. The request must reach the router from an adjacent network; the disclosed consequence is limited to denial of service.

The record

CVE
CVE-2024-39181
Published
Jul 9, 2024
Updated
Nov 20, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120, T1499
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 20, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/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')
T1499Endpoint Denial of Service

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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