CVE-2026-110957
10.0CriticalPublished 15 Oct 2026 · NVD status: Deferred · AI triage by gemini-3.8-flash
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Impact
- Full C/I/A compromise
- Weakness
- CWE-77, CWE-78
Impact
Remote unauthenticated attackers can execute arbitrary OS commands on the device over the network. Exploitation requires sending a manipulated REMOTE_ADDR parameter to the login processing API.
Root cause
The sub_12580 function in api.cgi passes the unvalidated REMOTE_ADDR parameter directly to a system() shell call instead of executing it safely.
Affected systems
Wavlink WL-WN530BE2-A up to M30BE2_V250604
CVSS v3.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Fix & remediation
Flash firmware version 2026-09-24-841a51c6d5_tclinux.bin immediately; as an interim workaround, restrict or block network access to the router's web management interface.
AI-suggested. Run it in staging first and check it against the vendor advisory. Why?
NVD description
A vulnerability has been found in Wavlink WL-WN530BE2-A up to M30BE2_V250604. The affected element is the function sub_12580 of the file api.cgi of the component Login Processing. The manipulation of the argument REMOTE_ADDR leads to os command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 2026-09-24-841a51c6d5_tclinux.bin is sufficient to fix this issue. You should upgrade the affected component. The vendor confirms: "We confirm the finding, and it has already been addressed. In the current firmware the api=info&client=app handler no longer builds a shell command: the login script is now invoked through an argument vector (execvp) instead of system(), and the client address is length-limited and null-checked."