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CRITICAL

CVE-2026-89010

CVSS v3

9.8

CRITICAL

EPSS Score

2.9 %

exploit probability

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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

Technical details

CVSS v3 Vector
3.1
Published
2026-09-11
Last Modified
2026-09-11

Frequently asked questions

What is 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

Is CVE-2026-89010 actively exploited?

Active exploitation of CVE-2026-89010 has not been confirmed. The EPSS score is 2.9%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-89010?

CVE-2026-89010 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string 3.1.

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