CVE-2024-32324Public exploit

Local code execution via unchecked VPN client IP

Published Apr 25, 2024 · Updated Aug 2, 2024

Buffer overflow in LBT-T300-T400 Firmware 3.2 allows local users to execute arbitrary code through a crafted VPN client IP. The config_vpn_pptp function in the rc program accepts vpn_client_ip without a length restriction, overflowing its destination buffer. Exploitation requires access to the router's authenticated PPTP VPN configuration request and can execute code in the firmware process.

CVSS severity7.8
High
EPSS probability0.25%
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 LBT-T300-T400 Firmware 3.2 allows local users to execute arbitrary code through a crafted VPN client IP. The config_vpn_pptp function in the rc program accepts vpn_client_ip without a length restriction, overflowing its destination buffer. Exploitation requires access to the router's authenticated PPTP VPN configuration request and can execute code in the firmware process.

The record

CVE
CVE-2024-32324
Published
Apr 25, 2024
Updated
Aug 2, 2024
Vendor
Shenzhen Libituo Technology Co., Ltd.
Product
LBT-T300-T400 Firmware
Classifications
CWE-120
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 25, 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=3.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Shenzhen Libituo Technology Co., Ltd. · LBT-T300-T400 Firmwareversion=3.2

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

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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