CVE-2025-11837

HIGH8.1/ 10.0
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Published: January 2, 2026 at 04:15 PM
Modified: January 22, 2026 at 06:28 PM
Source: security@qnapsecurity.com.tw

Vulnerability Description

An improper control of generation of code vulnerability has been reported to affect Malware Remover. The remote attackers can then exploit the vulnerability to bypass protection mechanism. We have already fixed the vulnerability in the following version: Malware Remover 6.6.8.20251023 and later

CVSS Metrics

Base Score
8.1
Severity
HIGH
Vector String
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses (CWE)

Source: security@qnapsecurity.com.tw

AI Security Analysis

01 // Technical Summary

Malware Remover versions prior to 6.6.8.20251023 are vulnerable to a critical code generation flaw, allowing remote attackers to bypass security mechanisms and potentially execute arbitrary code. This vulnerability poses a significant risk of system compromise and data exfiltration.

02 // Vulnerability Mechanism

Step 1: Payload Delivery: The attacker identifies a method to inject malicious input into the Malware Remover software. This could involve exploiting a web interface, uploading a crafted configuration file, or sending specially crafted network traffic.

Step 2: Input Processing: The Malware Remover software processes the attacker-supplied input, which is intended to modify or generate code used for malware detection.

Step 3: Code Generation: Due to the vulnerability, the software fails to properly validate or sanitize the malicious input. This leads to the generation of code that bypasses security checks or performs unintended actions.

Step 4: Bypass/Execution: The generated code is executed, allowing the attacker to bypass Malware Remover's protection mechanisms. This could involve disabling security features, injecting malicious code, or gaining unauthorized access to the system.

Step 5: Post-Exploitation: The attacker leverages the compromised system to achieve their objectives, such as data exfiltration, lateral movement, or further system compromise.

03 // Deep Technical Analysis

The vulnerability stems from an improper control of code generation within Malware Remover. Specifically, the software likely fails to adequately validate or sanitize user-supplied input that is used to construct or modify code. This could manifest as a flaw in how the software handles rules, signatures, or other configuration data used for malware detection. An attacker could craft malicious input designed to generate code that bypasses the intended security checks, potentially leading to arbitrary code execution. The root cause is likely a lack of input validation or improper sanitization of user-controlled data used in code generation, leading to a code injection vulnerability. This could involve flaws in how the software parses configuration files, handles regular expressions, or processes rule updates. The specific function responsible for generating or modifying the code is the likely point of failure.

CVE-2025-11837 - HIGH Severity (8.1) | Free CVE Database | 4nuxd