CVE-2026-89010

CriticalCVSS 9.8/10Last modified Oct 29, 2026

Description

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-78

Affected software

Vendor	Product	Versions
WAVLINK Technology	WN535M1	M35M1_V210223
WAVLINK Technology	WN535M3	M35M1_V210223

References

Timeline

Published: Sep 11, 2026
Last modified: Oct 29, 2026
NVD status: Deferred

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