CVE-2019-5143: Moxa Awk-3131a Firmware

High severity, CVSS 8.8. EPSS: 4.5% chance of exploitation in the next 30 days.

An exploitable format string vulnerability exists in the iw_console conio_writestr functionality of the Moxa AWK-3131A firmware version 1.13. A specially crafted time server entry can cause an overflow of the time server buffer, resulting in remote code execution. An attacker can send commands while authenticated as a low privilege user to trigger this vulnerability.

Affected products

• Moxa Awk-3131a Firmware: version 1.13 only

Published 2020-02-25. Last modified 2026-06-17.