HIGH
CVE-2026-3609
Published: May 11, 2026· Updated: May 13, 2026
7.8
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:4.3th
Official 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)
Technical Analysis
CVE-2026-3609 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Vendors & Products
wellbia1 product
xigncode3
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (3)
→
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
Quick Facts
CVE IDCVE-2026-3609
CVSS Score7.8 / 10
SeverityHIGH
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedMay 11, 2026
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-3609 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.