CVE-2024-29243Public exploitNetwork attack vector

Router compromise via oversized VPN client IP

Published Mar 21, 2024 · Updated Aug 2, 2024

Buffer overflow in Shenzhen Libituo LBT-T300-mini firmware 1.2.9 allows remote attackers to corrupt memory via /apply.cgi. The handler copies an oversized vpn_client_ip value into a fixed-size buffer without enforcing the destination's size limit. An unauthenticated network request is sufficient; the corruption can compromise the router or interrupt its service without user interaction.

CVSS severity9.8
Critical
EPSS probability0.82%
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-mini firmware 1.2.9 allows remote attackers to corrupt memory via /apply.cgi. The handler copies an oversized vpn_client_ip value into a fixed-size buffer without enforcing the destination's size limit. An unauthenticated network request is sufficient; the corruption can compromise the router or interrupt its service without user interaction.

The record

CVE
CVE-2024-29243
Published
Mar 21, 2024
Updated
Aug 2, 2024
Vendor
Shenzhen Libituo Technology Co., Ltd.
Product
LBT-T300-mini Firmware
Classifications
CWE-120, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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?

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

  1. Affected versionversion=1.2.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shenzhen Libituo Technology Co., Ltd. · LBT-T300-mini Firmwareversion=1.2.9

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
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

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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