CVE-2026-89010
CriticalCVSS 9.8Summary
WAVLINK WN535M1 and WN535M3 routers running firmware prior to M35M1_V250922 contain an unauthenticated OS command injection vulnerability that allows remote attackers to execute arbitrary commands as root by sending crafted filenames to the sync_server daemon on TCP port 13136. The daemon interpolates attacker-controlled filename input containing shell metacharacters into a shell command string via sprintf() and passes it to system() without sanitization, enabling root-level command execution.
Risk Assessment
Allows a remote attacker to execute arbitrary commands as root, leading to full device compromise and loss of confidentiality, integrity, and availability.
Recommendation
Update the firmware of WAVLINK WN535M1 and WN535M3 routers to version M35M1_V250922 or later.
Other vulnerabilities in WAVLINK WN535M1/WN535M3
Original NVD description (English source)
WAVLINK WN535M1 and WN535M3 routers running firmware prior to M35M1_V250922 contain an unauthenticated OS command injection vulnerability that allows remote attackers to execute arbitrary commands as root by sending crafted filenames to the sync_server daemon on TCP port 13136. The daemon interpolates attacker-controlled filename input containing shell metacharacters into a shell command string via sprintf() and passes it to system() without sanitization, enabling root-level command execution on the device.