Shenzhen Libituo Technology LBT-T300-HW1 up to 1.2.8 Web Management Interface start_single_service vpn_pptp_server/vpn_l2tp_server buffer overflow

Summaryinfo

A vulnerability was found in Shenzhen Libituo Technology LBT-T300-HW1 up to 1.2.8. It has been classified as critical. Impacted is the function start_single_service of the component Web Management Interface. The manipulation of the argument vpn_pptp_server/vpn_l2tp_server leads to buffer overflow. This vulnerability is uniquely identified as CVE-2026-7674. The attack is possible to be carried out remotely. No exploit exists. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability was found in Shenzhen Libituo Technology LBT-T300-HW1 up to 1.2.8. It has been rated as critical. This issue affects the function start_single_service of the component Web Management Interface. The manipulation of the argument vpn_pptp_server/vpn_l2tp_server with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-7674. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/03/2026).

The vendor was contacted early about this disclosure but did not respond in any way.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-26808). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• Shenzhen Libituo Technology

Name

• LBT-T300-HW1

Version

• 1.2.0
• 1.2.1
• 1.2.2
• 1.2.3
• 1.2.4
• 1.2.5
• 1.2.6
• 1.2.7
• 1.2.8

CPE 2.3info

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CPE 2.2info

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Entryinfo

Submitinfo

Accepted

• Submit #800705: Libtor Technology lbt-t300-hw1 <=V1.2.8 Buffer Overflow (by kunlun)

Duplicate

• Submit #XXXXXX: Xxxxxx Xxxxxxxxxx Xxx-xxxx-xxx <=xx.x.x Xxxxxx Xxxxxxxx (by kunlun)

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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