Cudy TR3000 up to 2.5.41 WireGuard /cgi-bin/luci/rpc/app vpn.export_conf private_key command injection

Summaryinfo

A vulnerability marked as very critical has been reported in Cudy TR3000 up to 2.5.41. Affected by this vulnerability is the function vpn.export_conf of the file /cgi-bin/luci/rpc/app of the component WireGuard Handler. This manipulation of the argument private_key causes command injection. The identification of this vulnerability is CVE-2026-75577. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Cudy TR3000 up to 2.5.41 and classified as very critical. Affected by this vulnerability is the function vpn.export_conf of the file /cgi-bin/luci/rpc/app of the component WireGuard Handler. The manipulation of the argument private_key with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Cudy TR3000 before 2.5.42 contains a command injection vulnerability that allows authenticated administrators to execute commands as root by storing a malicious WireGuard private key. Attackers can save a private_key containing $() shell substitution and call the vpn.export_conf method on the /cgi-bin/luci/rpc/app JSON-RPC endpoint, which passes the key to a wg pubkey shell command.

The advisory is shared at cudy.com. This vulnerability is known as CVE-2026-75577 since 08/18/2026. The exploitation appears to be easy. The attack can be launched remotely. Additional levels of successful authentication are needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/13/2026). MITRE ATT&CK project uses the attack technique T1202 for this issue.

Upgrading to version 2.5.42 eliminates this vulnerability.

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Productinfo

Vendor

• Cudy

Name

• TR3000

Version

• 2.5.0
• 2.5.1
• 2.5.2
• 2.5.3
• 2.5.4
• 2.5.5
• 2.5.6
• 2.5.7
• 2.5.8
• 2.5.9
• 2.5.10
• 2.5.11
• 2.5.12
• 2.5.13
• 2.5.14
• 2.5.15
• 2.5.16
• 2.5.17
• 2.5.18
• 2.5.19
• 2.5.20
• 2.5.21
• 2.5.22
• 2.5.23
• 2.5.24
• 2.5.25
• 2.5.26
• 2.5.27
• 2.5.28
• 2.5.29
• 2.5.30
• 2.5.31
• 2.5.32
• 2.5.33
• 2.5.34
• 2.5.35
• 2.5.36
• 2.5.37
• 2.5.38
• 2.5.39
• 2.5.40
• 2.5.41

CPE 2.3info

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CPE 2.2info

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