CVE-2026-89010
WAVLINK WN535M1/WN535M3 Unauthenticated OS Command Injection via sync_server
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-78 |
| Vendor | wavlink technology |
| Product | wn535m1 |
| Published | Sep 11, 2026 |
| Last Updated | Sep 11, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
WAVLINK Technology / WN535M1
M35M1_V210223
WAVLINK Technology / WN535M3
M35M1_V210223
References
Credits
Cameron Smith