CVE-2018-6522

Severity: high (CVSS 7.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-02-02 · updated 2026-06-17
Weakness: CWE-20

Description

In nProtect AVS V4.0 before 4.0.0.39, the driver file (TKRgFtXp.SYS) allows local users to cause a denial of service (BSOD) or possibly have unspecified other impact because of not validating input values from IOCtl 0x220408.

Affected products

Inca Nprotect Avs: from 4.0 before 4.0.0.39 — fixed in 4.0.0.39

How to fix

Upgrade to a fixed version: Inca Nprotect Avs 4.0.0.39. Check the vendor advisory for mitigations.

References

http://inca.co.kr/include_file/pdf_down/nProtect%20AVS%20V4%20Vulnerability%20Response%20Release%20Notes.pdf
https://github.com/ZhiyuanWang-Chengdu-Qihoo360/nProtectAntivirus_POC/tree/master/TKRgFtXp_0x220408
http://inca.co.kr/include_file/pdf_down/nProtect%20AVS%20V4%20Vulnerability%20Response%20Release%20Notes.pdf
https://github.com/ZhiyuanWang-Chengdu-Qihoo360/nProtectAntivirus_POC/tree/master/TKRgFtXp_0x220408

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