CVE-2026-89010CWE-78command-injection

CVE-2026-89010

Critical · published September 11, 2026

CVSS v3.1
9.8
EPSS
3%
Percentile
87.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
9.3 · 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
EPSS
0.03168 · 87.9th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-09-11T19:17Z
References (3)
https://docs.wavlink.xyz/ · [email protected]https://github.com/camdsmith/wavlink-sync_server-rce/blob/main/README.md · [email protected]https://www.vulncheck.com/advisories/wavlink-wn535m1-wn535m3-unauthenticated-os-command-injection-via-sync-server · [email protected]
EPSS history
Timeline
  • 13 SEP 03:23Z
    EPSS moved — → 3%
    epss
  • 11 SEP 14:57Z
    WAVLINK WN535M1/WN535M3 Unauthenticated OS Command Injection via sync_server
    cvelistv5