CVE-2026-3609 XIGNCODE3 xhunter1.sys kernel driver contains a Privilege Escalation Vulnerability
A local attacker can exploit the XIGNCODE3 kernel driver to gain PROCESS_ALL_ACCESS privileges, leading to privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3609?
CVE-2026-3609 is a medium-severity vulnerability in Wellbia XIGNCODE3, published on 11 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Wellbia's XIGNCODE3 xhunter1.sys kernel driver, version 10.0.10011.16384 through 2023.12.7.78, privilege escalation vulnerability provides access to the IRP_MJ_WRITE command interface, which allows any user process to request a PROCESS_ALL_ACCESS. Note: KVE 2023-5589 (https://krcert.or.kr) was initially issued for version 10.0.10011.16384, but the vulnerability was not fully remediated and remains in version 2023.12.7.78.
Which versions are affected by CVE-2026-3609?
It affects 1 product.
Products include Wellbia Xigncode3.
How do I fix CVE-2026-3609?
No fix has been published for CVE-2026-3609 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-3609 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3609 exists.
Public exploit code: 2 proofs of concept on GitHub.
Sources
Also known as GHSA-4gcg-jv45-v47x.