Privilege Escalation in Wellbia XIGNCODE3 xhunter1.sys Driver

Publication date: 2026-05-11

Last updated on: 2026-08-05

Assigner: CERT/CC

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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-05-11

Last Modified

2026-08-05

Generated

2026-08-20

AI Q&A

2026-05-11

EPSS Evaluated

2026-08-19

NVD

CVE-2026-3609

EUVD

EUVD-2026-29110

Affected Vendors & Products

Vendor	Product	Version / Range
wellbia	xigncode3	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

The vulnerability in Wellbia's XIGNCODE3 xhunter1.sys kernel driver is a privilege escalation issue. It allows any user process to access the IRP_MJ_REITS command interface, which can be used to request PROCESS_ALL_ACCESS. This means that a non-privileged user process can gain full access rights to other processes.

Impact Analysis

This vulnerability can allow an attacker or malicious user to escalate their privileges on the affected system. By gaining PROCESS_ALL_ACCESS, they can control or manipulate other processes, potentially leading to unauthorized actions, data theft, or system compromise.

Hi! I’m here to help you understand CVE-2026-3609. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70