CVE-2025-54001 — AI Deep Analysis Summary

🚨 **Essence**: PHP Object Injection via untrusted data deserialization. 💥 **Consequences**: Attackers can inject malicious objects, leading to full system compromise, data theft, or service disruption.

🛡️ **Root Cause**: CWE-502 (Deserialization of Untrusted Data). The plugin fails to validate/sanitize data before passing it to PHP's `unserialize()` function.

📦 **Affected**: WordPress Plugin **Classter** by ThemeREX. 📉 **Versions**: 2.5 and earlier. 🌐 **Platform**: WordPress sites running this specific theme/plugin.

🕵️ **Capabilities**: Remote Code Execution (RCE), arbitrary file manipulation, database access. 📊 **Impact**: High (CVSS H). Full control over the server environment and sensitive data exposure.

🔓 **Threshold**: **LOW**. CVSS indicates: Network Accessible (AV:N), Low Complexity (AC:L), No Privileges Required (PR:N), No User Interaction (UI:N). Easy to exploit remotely.

📜 **Exploit Status**: No public PoC/Exploit listed in the provided data. However, the vulnerability type is well-known, making custom exploits likely available in the wild.

🔍 **Self-Check**: Scan for WordPress sites running **Classter** theme/plugin version ≤ 2.5. Look for endpoints triggering PHP object deserialization or unusual HTTP requests containing serialized payloads.

🛠️ **Fix**: Update Classter plugin/theme to the latest version released by ThemeREX. 📝 **Reference**: Check Patchstack database for official patch details.

🚧 **Workaround**: If unpatched, restrict web server access to plugin directories, disable PHP execution in upload folders, and implement strict WAF rules to block serialized object payloads.

⚡ **Priority**: **CRITICAL**. High CVSS score (likely 9.8+), no auth required, and direct path to RCE. Immediate patching is strongly recommended to prevent takeover.