CVE-2025-11023
📋 TL;DR
This CVE describes a PHP Local File Inclusion vulnerability in ArkSigner's AcBakImzala software that allows attackers to include and execute arbitrary local files. The vulnerability affects all versions before v5.1.4 and can lead to remote code execution. This is a critical vulnerability with a CVSS score of 9.8 affecting PHP-based systems running vulnerable versions.
💻 Affected Systems
- ArkSigner Software and Hardware Inc. AcBakImzala
⚠️ 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.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data exfiltration, and lateral movement within the network.
Likely Case
Unauthorized file access, sensitive information disclosure, and potential privilege escalation.
If Mitigated
Limited impact with proper file permissions and web server hardening, though vulnerability still exists.
🎯 Exploit Status
PHP LFI vulnerabilities are typically easy to exploit with publicly available techniques, though no specific PoC is confirmed for this CVE.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v5.1.4
Vendor Advisory: https://www.usom.gov.tr/bildirim/tr-25-0356
Restart Required: Yes
Instructions:
1. Download v5.1.4 from official vendor sources. 2. Backup current installation and data. 3. Stop the AcBakImzala service. 4. Replace files with patched version. 5. Restart the service and verify functionality.
🔧 Temporary Workarounds
Disable PHP include functions
allRestrict PHP's ability to include files from untrusted sources via php.ini configuration.
php.ini: allow_url_include = Off
php.ini: allow_url_fopen = Off
Web server file restriction
allConfigure web server to block requests with suspicious file inclusion patterns.
Apache: RewriteRule .*\.php.* - [F]
Nginx: location ~ \.php$ { deny all; }
🧯 If You Can't Patch
- Implement strict input validation and sanitization for all user-controlled file paths.
- Deploy web application firewall (WAF) rules to block LFI attack patterns and monitor for exploitation attempts.
🔍 How to Verify
Check if Vulnerable:
Check the software version in the admin interface or configuration files; if version is below 5.1.4, the system is vulnerable.Check Version:
Check application configuration files or admin panel for version information.Verify Fix Applied:
After patching, verify the version shows v5.1.4 or higher and test file inclusion attempts return errors instead of executing.📡 Detection & Monitoring
Log Indicators:
- Unusual file path patterns in web server logs (e.g., ../../etc/passwd)
- PHP error logs showing include/require failures with suspicious paths
Network Indicators:
- HTTP requests with file inclusion parameters (e.g., ?page=../../../etc/passwd)
- Unusual outbound connections from the web server
SIEM Query:
source="web_server" AND (uri="*../*" OR uri="*php*" OR param="*page*" OR param="*file*")