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CVE-2018-6523

23
FAUCET Score

CVE-2018-6523 describes a denial-of-service vulnerability in nProtect AVS V4.0 prior to version 4.0.0.39, specifically within the TKFsAv.SYS driver. This flaw allows a local attacker to trigger a Blue Screen of Death (BSOD) or potentially achieve other unspecified impacts due to insufficient input validation for IOCtl 0x22045c. With a CVSS v3 score of 7.8 (High), the vulnerability is easily exploitable locally with low complexity, leading to high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.0, < 4.0.0.39CPE matchmatch criteria
cpe:2.3:a:inca:nprotect_avs:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.35%
Probability of exploitation in next 30 days
EPSS Percentile
27.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0035 is in the 66th percentile among its peer group of 16,974 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

inca.co.kr / include_file/pdf_down/nProtect%20AVS%20V4%20Vulnerability%20Response%20Release%20Notes.pdf
Vendor Advisory
github.com / ZhiyuanWang-Chengdu-Qihoo360/nProtectAntivirus_POC/tree/master/TKFsAv_0x22045c
Third Party Advisory