CVE-2026-109107 Wavlink WL-WN592AX6 upload.cgi main null pointer dereference
Remote attackers can cause a denial of service in Wavlink WL-WN592AX6 routers via a null pointer dereference in upload.cgi.
- 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-2026-109107?
CVE-2026-109107 is a medium-severity vulnerability in Wavlink WL-WN592AX6, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A weakness has been identified in Wavlink WL-WN592AX6 250422. Affected by this issue is the function main of the file /cgi-bin/upload.cgi. This manipulation of the argument Cookie causes null pointer dereference. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.
Which versions are affected by CVE-2026-109107?
How do I fix CVE-2026-109107?
No fix has been published for CVE-2026-109107 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-109107 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-109107 exists.
Sources
Also known as GHSA-63gq-q842-m3x6.