CVE-2026-15430Public exploit

Local privilege escalation via reusable authentication artifacts

Published Aug 3, 2026 · Updated Aug 3, 2026

Improper access control in Wellbia XIGNCODE3 2026.6.1.192 allows local users to gain SYSTEM privileges through xhunter2.sys writes. The driver treats a signed module copied from game memory as caller identity, accepts an empty certificate chain, and lets unprotected commands set the PID flags guarding privileged operations. A standard Windows user can mint protected-process handles, read lsass.exe credentials, terminate security processes, or inject code.

CVSS severity6.2
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Wellbia XIGNCODE3 2026.6.1.192 allows local users to gain SYSTEM privileges through xhunter2.sys writes. The driver treats a signed module copied from game memory as caller identity, accepts an empty certificate chain, and lets unprotected commands set the PID flags guarding privileged operations. A standard Windows user can mint protected-process handles, read lsass.exe credentials, terminate security processes, or inject code.

The record

CVE
CVE-2026-15430
Published
Aug 3, 2026
Updated
Aug 3, 2026
Vendor
Wellbia
Product
XIGNCODE3
Classifications
CWE-269, CWE-284, CWE-732, T1003.001, T1562.001, T1055, T1068
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2026.6.1.192

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Wellbia · XIGNCODE3version=2026.6.1.192

Published CVSS scores

6.2CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-269Improper Privilege Management
CWE-284Improper Access Control
CWE-732Incorrect Permission Assignment for Critical Resource
T1003.001LSASS Memory
T1562.001Impair Defenses
T1055Process Injection
T1068Exploitation for Privilege Escalation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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