CVE-2023-34356: Peplink Surf Soho Firmware

High severity, CVSS 8.8. EPSS: 5.5% chance of exploitation in the next 30 days.

An OS command injection vulnerability exists in the data.cgi xfer_dns functionality of peplink Surf SOHO HW1 v6.3.5 (in QEMU). A specially crafted HTTP request can lead to command execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.

Affected products

• Peplink Surf Soho Firmware: version 6.3.5 only

Published 2023-10-11. Last modified 2026-06-17.