What’s Vulnerable › Vulnerabilities

CVE-2026-3609: XIGNCODE3 xhunter1.sys kernel driver contains a Privilege Escalation Vulnerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-05-11 · updated 2026-10-26

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.

Affected products

• Wellbia XIGNCODE3: 10.0.10011.16384

References

• https://blacksnufkin.github.io/posts/AntiCheat-LPE-CVE-2026-3609/
• https://blacksnufkin.github.io/posts/Hunting-the-Hunter/
• https://crcert.or.kr
• https://blacksnufkin.github.io/posts/AntiCheat-LPE-CVE-2026-3609/

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