blacksnufkin.github.ioadvisoryCVE-2026-3609: PPL-Bypassing Handle Leak in XIGNCODE3 (xhunter1.sys)
Analysis of CVE-2026-3609, a vulnerability in XIGNCODE3's kernel anticheat driver (xhunter1.sys) that leaks a handle allowing bypass of Protected Process Light (PPL) protections, enabling local privilege escalation. The post likely details how an unprivileged process can abuse the driver's IOCTL interface to obtain a handle to a protected process and escalate privileges on Windows.
TL;DR Handle-leak bug in XIGNCODE3 anticheat driver (xhunter1.sys) bypasses PPL and grants local privilege escalation (CVE-2026-3609).
CVEs named here
- CVE-2026-3609
Technologies named here
- Windows
- XIGNCODE3
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