CVE-2023-27388: Especmic RS-12n Firmware

Critical severity, CVSS 9.8. EPSS: 1.3% chance of exploitation in the next 30 days.

Improper authentication vulnerability in T&D Corporation and ESPEC MIC CORP. data logger products allows a remote unauthenticated attacker to login to the product as a registered user. Affected products and versions are as follows: T&D Corporation data logger products (TR-71W/72W all firmware versions, RTR-5W all firmware versions, WDR-7 all firmware versions, WDR-3 all firmware versions, and WS-2 all firmware versions), and ESPEC MIC CORP. data logger products (RT-12N/RS-12N all firmware versions, RT-22BN all firmware versions, and TEU-12N all firmware versions).

Affected products

• Especmic RS-12n Firmware: any version
• Especmic Rt-12n Firmware: any version
• Especmic Rt-22bn Firmware: any version
• Especmic Teu-12n Firmware: any version
• Tandd Rtr-5w Firmware: any version
• Tandd Tr-71w Firmware: any version
• Tandd Tr-72w Firmware: any version
• Tandd Wdr-3 Firmware: any version
• Tandd Wdr-7 Firmware: any version
• Tandd Ws-2 Firmware: any version

Published 2023-05-23. Last modified 2026-06-17.