Improper Access Control in Wellbia XIGNCODE3 Affects System Integrity
CVE-2026-15430

6.2MEDIUM

Key Information:

Vendor

Wellbia

Status
Xigncode3
Vendor
CVE Published:
3 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-15430?

The improper access control in the IRP_MJ_WRITE command interface of Wellbia XIGNCODE3, specifically in the xhunter2.sys component version 2026.6.1.192, potentially allows a local unprivileged attacker to escalate their privileges to the NT AUTHORITY\SYSTEM level. This vulnerability also poses risks of credential extraction from PPL-protected lsass.exe and the ability to terminate critical PPL-protected security processes, undermining system integrity and security.

Affected Version(s)

XIGNCODE3 2026.6.1.192

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

AxHunter
Created by BlackSnufkin

References

https://blacksnufkin.github.io/posts/Hunting-the-Hunter-II/

CVSS V3.1

Score:
6.2
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.