CVE-2026-109108 Wavlink WL-WN530BE1-A uploadVpn.cgi popen os command injection
Remote attackers can execute arbitrary OS commands via the uploadVpn.cgi script in Wavlink WL-WN530BE1-A routers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-109108?
CVE-2026-109108 is a critical command injection vulnerability in Wavlink WL-WN530BE1-A, published on 13 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A security vulnerability has been detected in Wavlink WL-WN530BE1-A 251117. This affects the function popen of the file /cgi-bin/uploadVpn.cgi. Such manipulation of the argument Type leads to os command injection. The attack may be performed from remote. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure.
Which versions are affected by CVE-2026-109108?
How do I fix CVE-2026-109108?
No fix has been published for CVE-2026-109108 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-2026-109108 being exploited?
There is no known exploitation of CVE-2026-109108 in the wild and no public exploit code.
Sources
Also known as GHSA-643r-m5f4-v845.