A flaw has been found in Shenzhen Libituo Technology LBT-T300-HW1 up to version 1.2.8. This issue affects the function start_single_service of the component Web Management Interface. Executing a manipulation of the argument vpn_pptp_server/vpn_l2tp_server can lead to buffer overflow. The attack can be executed remotely. The vendor was contacted early about this disclosure but did not respond in any way.
The severity of this vulnerability is classified as high, with a CVSS score of 8.7. This level indicates significant risk, as attackers may leverage this flaw for unauthorized access and control over affected systems. Organizations should prioritize patching immediately.
Risk to organizations includes potential data breaches, service disruptions, and unauthorized control over network services. Given the nature of the vulnerability and its remote exploitation capability, it is crucial for security teams to assess their systems for exposure.
Currently, there is no known public exploit for this vulnerability, nor has it been included in the Known Exploited Vulnerabilities (KEV) catalog. However, the nature of the vulnerability necessitates a proactive approach to security.
Organizations should address this vulnerability in their priority patch cycle to reduce exposure and mitigate risk.
Vulnerability Details
A flaw has been found in Shenzhen Libituo Technology LBT-T300-HW1 up to version 1.2.8. This issue affects the function start_single_service of the component Web Management Interface. Executing a manipulation of the argument vpn_pptp_server/vpn_l2tp_server can lead to buffer overflow. The attack can be executed remotely. The vendor was contacted early about this disclosure but did not respond in any way.
The CVSS score for this vulnerability is 8.7, indicating high severity. The vulnerability is classified under CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and CWE-120 (Buffer Copy without Checking Size of Input).
Technical Analysis
The root cause of this vulnerability lies in improper handling of input parameters within the Web Management Interface. The attack vector is network-based, allowing remote attackers to exploit the flaw with low complexity and minimal privileges required.
The attack does not require user interaction, making it easier for an attacker to execute. The impact on confidentiality, integrity, and availability is high, as successful exploitation can lead to unauthorized access and control over affected systems.
Risk & Impact Analysis
Real-world deployment risk is significant, as this vulnerability can allow remote attackers to gain control over the device. Organizations using affected versions of the LBT-T300-HW1 should assess their exposure and take immediate action.
The potential blast radius for this vulnerability is wide, affecting any networked device using the vulnerable components. Organizations must recognize the urgency of addressing this in their patch management strategy.
Given the high CVSS score and the potential for exploitation, the urgency for defenders is critical. Organizations should prioritize patching immediately.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to vendor patch for Shenzhen Libituo Technology LBT-T300-HW1.
Mitigation & Remediation
Organizations should implement immediate remediation by applying available patches from the vendor for the affected LBT-T300-HW1 model. If a patch is unavailable, consider implementing configuration changes to restrict access to the web management interface.
For further assistance, organizations may consider engaging in penetration testing to validate the effectiveness of their remediation efforts.
Detection Guidance
Monitor logs for unusual access patterns to the web management interface and any attempts to manipulate the vpn_pptp_server or vpn_l2tp_server parameters. Look for behavior anomalies that could indicate an attempted exploitation of this vulnerability.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2026-7674 lies in its potential to expose vulnerabilities in network management interfaces, which can be a critical attack vector. Security teams should take this as a reminder to regularly assess their systems for similar weaknesses.
This vulnerability represents a pattern of insufficient input validation leading to severe security risks. Organizations should learn from this incident to strengthen their security postures.
For additional resources on securing network devices, organizations can refer to penetration testing methodology and vulnerability management program design best practices.
Organizations should also consider engaging in cloud penetration testing to ensure comprehensive security coverage.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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