CVE-2026-75577

Description

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.

References

• https://d1jvyy13vm72kv.cloudfront.net/device/upgrade/m_upgrade_TR3000_256MB_Flash-R103-2.5.42-20261103-160202-sysupgrade_82672.zip
• https://www.cudy.com/en-us/pages/download-center/tr3000-1-0
• https://www.vulncheck.com/advisories/cudy-tr3000-before-2.5.42-command-injection-via-vpn-export-conf-wireguard-private-key