CVE-2026-89010
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.
Scoring
- Severity
- CRITICAL
- CVSS base score
- 9.8
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CWE
- CWE-78
- Published
- 2026-09-11
- Last modified
- 2026-09-11
Affected products
- WAVLINK Technology WN535M1
- WAVLINK Technology WN535M1
- WAVLINK Technology WN535M3
- WAVLINK Technology WN535M3
Weakness type
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