CVE-2026-110957 Wavlink WL-WN530BE2-A Login Processing api.cgi sub_12580 os command injection
Remote attackers can execute arbitrary OS commands via the REMOTE_ADDR argument in the login processing API of Wavlink routers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-110957?
CVE-2026-110957 is a critical command injection vulnerability in Wavlink WL-WN530BE2-A, published on 15 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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."
Which versions are affected by CVE-2026-110957?
How do I fix CVE-2026-110957?
No fix has been published for CVE-2026-110957 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-110957 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-110957 exists.
Sources
Also known as GHSA-hcq8-q899-8h78.