Uncontrolled Search Path Issue in CheckMAL AppCheck Pro Software
CVE-2026-18605

7.3HIGH

Key Information:

Vendor

Checkmal

Status
Appcheck Pro
Vendor
CVE Published:
3 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-18605?

A security flaw has been identified in CheckMAL AppCheck Pro version 3.1.43.10, stemming from an unknown function within the AppCheckD.sys library, which is part of the Kernel Mini-Filter Driver. This vulnerability allows for an uncontrolled search path that could be exploited through local manipulation. While the complexity of executing an attack is notably high, it requires specific conditions to be met. The exploit has been made public, potentially allowing malicious actors to conduct attacks. Despite early disclosure to the vendor for a resolution, no response has been received.

Affected Version(s)

AppCheck Pro 3.1.43.10

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-18605 - Proof of Concept

References

https://vuldb.com/vuln/385528
vdb-entry
https://vuldb.com/vuln/385528/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-18605
third-party-advisory

CVSS V4

Score:
7.3
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

opcodic (VulDB User)
VulDB CNA Team
.