CVE-2025-63729: Syrotech Sy-GPON-1110-Wdont Firmware

Critical severity, CVSS 9.0. EPSS: 0.1% chance of exploitation in the next 30 days.

An issue was discovered in Syrotech SY-GPON-1110-WDONT SYRO_3.7L_3.1.02-240517 allowing attackers to exctract the SSL Private Key, CA Certificate, SSL Certificate, and Client Certificates in .pem format in firmware in etc folder.

Affected products

• Syrotech Sy-GPON-1110-Wdont Firmware: version 3.1.02-240517 only

Published 2025-11-25. Last modified 2026-06-17.