CVE-2026-3609

Name: CVE-2026-3609
Creator: NVD / NIST
Published: 2026-05-11T18:16:33.56+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.18%

Last modified Jun 17, 2026

CVE-2026-3609 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Wellbia's XIGNCODE3 xhunter1.sys kernel driver Privilege Escalation Vulnerability provides access to IRP_MJ_REITS command interface, which allows any user process to request a PROCESS_ALL_ACCESS. Cross reference to KVE 2023-5589 (https://krcert.or.kr). EPSS estimates a 0.18% chance of exploitation in the next 30 days.

Description

Wellbia's XIGNCODE3 xhunter1.sys kernel driver Privilege Escalation Vulnerability provides access to IRP_MJ_REITS command interface, which allows any user process to request a PROCESS_ALL_ACCESS. Cross reference to KVE 2023-5589 (https://krcert.or.kr)

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.18%

7.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Wellbia	Xigncode3	10.0.10011.16384

References

https://blacksnufkin.github.io/posts/AntiCheat-LPE-CVE-2026-3609/Exploit, Third Party Advisory
https://crcert.or.krBroken Link
https://blacksnufkin.github.io/posts/AntiCheat-LPE-CVE-2026-3609/Exploit, Third Party Advisory

Timeline

Published: May 11, 2026
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2026-3609?

How severe is CVE-2026-3609?

CVE-2026-3609 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.

How do I fix CVE-2026-3609?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-3609?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST