---
id: CVE-2026-3609
title: >-
  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_A…
summary: >-
  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_A…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
vendor: wellbia
product: xigncode3
affected:
  - xigncode3 = 10.0.10011.16384
published: '2026-05-11'
updated: '2026-08-05'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-3609'
references:
  - url: 'https://blacksnufkin.github.io/posts/AntiCheat-LPE-CVE-2026-3609/'
    label: cret@cert.org
  - url: 'https://blacksnufkin.github.io/posts/Hunting-the-Hunter/'
    label: cret@cert.org
  - url: 'https://crcert.or.kr'
    label: cret@cert.org
  - url: 'https://blacksnufkin.github.io/posts/AntiCheat-LPE-CVE-2026-3609/'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - exploit-available
epss: 0.00232
epssPercentile: 0.14307
ingestedAt: '2026-08-06T01:53:51.075Z'
exploits:
  github: 2
  githubRepos:
    - 'https://github.com/BlackSnufkin/BYOVD'
    - 'https://github.com/BlackSnufkin/CredsHunter'
  checkedAt: '2026-09-24T07:53:02.857Z'
exploitAvailable: true
---

## Overview

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.

## Affected

- `xigncode3 = 10.0.10011.16384`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.