CVE-2026-30266: DeepCool DeepCreative Privilege Escalation

CVE-2026-30266 Overview

CVE-2026-30266 is an Insecure Permissions vulnerability in DeepCool DeepCreative v.1.2.12 and earlier versions. This local security flaw allows attackers to execute arbitrary code by exploiting improperly configured file permissions through a crafted file. The vulnerability requires user interaction but provides significant potential impact to system confidentiality, integrity, and availability.

Critical Impact

Local attackers can achieve arbitrary code execution through crafted malicious files, potentially leading to complete system compromise on affected installations of DeepCool DeepCreative software.

Affected Products

• DeepCool DeepCreative v.1.2.12
• DeepCool DeepCreative versions prior to v.1.2.12

Discovery Timeline

• 2026-04-20 - CVE-2026-30266 published to NVD
• 2026-04-23 - Last updated in NVD database

Technical Details for CVE-2026-30266

Vulnerability Analysis

This vulnerability stems from CWE-277: Insecure Inherited Permissions, where the DeepCool DeepCreative application fails to properly enforce secure file permissions. When installed or during runtime operations, the software creates files or directories with overly permissive access controls. This misconfiguration allows local attackers to manipulate these files or inject malicious content that gets executed within the context of the application.

The local attack vector requires that an attacker either have existing access to the system or social engineer a user into placing a crafted file in a location accessible to the vulnerable application. Despite requiring user interaction, the low attack complexity makes exploitation relatively straightforward once initial access is achieved.

Root Cause

The root cause of CVE-2026-30266 is the improper handling of file permissions within the DeepCool DeepCreative application. The software fails to implement the principle of least privilege when creating or accessing files, resulting in inherited permissions that grant excessive access to local users. This design flaw (CWE-277) enables unauthorized modification of application files or the introduction of malicious payloads that the application subsequently processes and executes.

Attack Vector

The attack leverages the local access vector, requiring the attacker to have some form of access to the target system. The exploitation flow involves:

1. An attacker identifies writable locations used by DeepCool DeepCreative with insecure permissions
2. The attacker crafts a malicious file designed to be processed by the application
3. The malicious file is placed in the vulnerable directory
4. Upon user interaction (such as opening the application or triggering a specific function), the crafted file is processed
5. Arbitrary code execution occurs within the security context of the application

For detailed technical analysis and proof-of-concept information, refer to the GitHub CVE-2026-30266 Research repository.

Detection Methods for CVE-2026-30266

Indicators of Compromise

• Unexpected files appearing in DeepCool DeepCreative installation directories with unusual modification timestamps
• Anomalous process spawning from the DeepCreative application process
• File permission changes on application-related directories that deviate from expected configurations
• Suspicious file writes to locations monitored by the DeepCreative software

Detection Strategies

• Monitor file system activity within DeepCool DeepCreative installation paths for unauthorized modifications
• Implement application whitelisting to detect unexpected executables launched from the DeepCreative application context
• Deploy endpoint detection solutions capable of identifying privilege escalation patterns associated with insecure permission exploitation
• Configure file integrity monitoring (FIM) for critical application directories

Monitoring Recommendations

• Enable detailed process creation logging to track child processes spawned by DeepCreative
• Implement Security Information and Event Management (SIEM) rules to correlate file modification events with subsequent code execution
• Review audit logs for permission changes on directories associated with the DeepCreative application
• Monitor for behavioral indicators such as unexpected network connections or system calls originating from the application

How to Mitigate CVE-2026-30266

Immediate Actions Required

• Verify the installed version of DeepCool DeepCreative and identify if it is v.1.2.12 or earlier
• Restrict local system access to trusted users only until a patch is available
• Review and harden file permissions on DeepCool DeepCreative installation directories
• Consider uninstalling or disabling the application if it is not business-critical until vendor remediation is available

Patch Information

At the time of publication, no official patch has been confirmed from DeepCool. Organizations should monitor the DeepCool Homepage and DeepCreative Homepage for security updates. Additionally, the GitHub CVE-2026-30266 Research repository may contain updated remediation guidance.

Workarounds

• Manually restrict file permissions on DeepCreative application directories to prevent unauthorized write access
• Implement application sandboxing or containerization to limit the impact of potential exploitation
• Deploy endpoint protection solutions with behavioral analysis capabilities to detect and block exploitation attempts
• Use Windows Software Restriction Policies or AppLocker to prevent unauthorized code execution from application directories

# Example: Restrict permissions on DeepCreative installation directory (Windows)
# Run in Administrator PowerShell
icacls "C:\Program Files\DeepCool\DeepCreative" /inheritance:r /grant:r Administrators:F /grant:r SYSTEM:F /grant:r Users:RX