CVE-2025-69621

6.5 MEDIUM

📋 TL;DR

An arbitrary file overwrite vulnerability in Comic Book Reader v1.0.95 allows attackers to overwrite critical internal files during file import. This could lead to arbitrary code execution or exposure of sensitive information. Users of Comic Book Reader v1.0.95 are affected.

💻 Affected Systems

Products:
  • Comic Book Reader
Versions: v1.0.95
Operating Systems: Unknown - Likely Windows based on references
Default Config Vulnerable: ⚠️ Yes
Notes: Vulnerability exists in the file import functionality. No specific OS confirmed but references suggest Windows environment.

⚠️ Manual Verification Required

This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.

Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).

🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.

Recommended Actions:
  1. Review the CVE details at NVD
  2. Check vendor security advisories for your specific version
  3. Test if the vulnerability is exploitable in your environment
  4. Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Full system compromise via arbitrary code execution with the privileges of the Comic Book Reader process, potentially leading to complete data exposure or system takeover.

🟠

Likely Case

Local privilege escalation, data corruption, or sensitive information disclosure by overwriting configuration or credential files.

🟢

If Mitigated

Limited impact if application runs with minimal privileges and file system permissions restrict write access to critical directories.

🌐 Internet-Facing: LOW - This appears to be a local file import vulnerability requiring user interaction or local access.
🏢 Internal Only: MEDIUM - Could be exploited by malicious local users or through social engineering to import malicious files.

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: MEDIUM

Exploitation requires user to import a malicious file. No public exploit code found in provided references.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Unknown

Vendor Advisory: http://comic.com

Restart Required: No

Instructions:

1. Check vendor website http://comic.com for security updates. 2. If patch available, download and install. 3. Verify version is updated from v1.0.95.

🔧 Temporary Workarounds

Disable file import functionality

all

Prevent file imports by restricting application permissions or disabling import features

Run with restricted privileges

windows

Run Comic Book Reader with limited user account privileges to reduce impact

🧯 If You Can't Patch

  • Uninstall Comic Book Reader v1.0.95 and use alternative software
  • Restrict application to isolated environment or virtual machine

🔍 How to Verify

Check if Vulnerable:

Check if Comic Book Reader version is 1.0.95 via Help > About or program properties

Check Version:

Check application properties or Help > About menu

Verify Fix Applied:

Verify version is no longer 1.0.95 after applying any available updates

📡 Detection & Monitoring

Log Indicators:

  • Unusual file write operations by Comic Book Reader process
  • Multiple failed import attempts
  • File permission changes in application directories

Network Indicators:

  • Not applicable - local file operation vulnerability

SIEM Query:

Process: 'Comic Book Reader' AND (FileOperation: Write OR FileOperation: Overwrite) AND TargetPath: (contains 'system' OR contains 'config' OR contains 'sensitive')

🔗 References

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