TP-Link Archer BE800 VPN Connection command injection

Summaryinfo

A vulnerability was found in TP-Link Archer BE800. It has been declared as very critical. The impacted element is an unknown function of the component VPN Connection. The manipulation results in command injection. This vulnerability is cataloged as CVE-2026-16348. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in TP-Link Archer BE800 (version now known). It has been classified as very critical. Affected is some unknown processing of the component VPN Connection. The manipulation with an unknown input leads to a command injection vulnerability. CWE is classifying the issue as CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An authenticated command injection vulnerability in TP-Link Archer BE800 V1 allows an attacker with administrative access to execute arbitrary system commands with root privileges by injecting shell metacharacters via a VPN connection.  Successful exploitation may enable persistent backdoors, credential theft, LAN reconnaissance, and router-assisted attacks against connected devices.

The advisory is shared for download at tp-link.com. This vulnerability is traded as CVE-2026-16348 since 07/20/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Additional levels of successful authentication are needed for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/24/2026). The MITRE ATT&CK project declares the attack technique as T1202.

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-2026-65007). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• TP-Link

Name

• Archer BE800

License

• commercial

Website

• Vendor: https://www.tp-link.com/

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Once again VulDB remains the best source for vulnerability data.

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