CVE-2025-25279 — AI Deep Analysis Summary

🚨 **Essence**: Mattermost has a critical flaw in **Board Import** validation. <br>📉 **Consequences**: Full system compromise. CVSS Score is **HIGHEST** (9.8+ implied by vector).…

🛡️ **Root Cause**: **CWE-22** (Path Traversal / Improper Limitation of a Pathname to a Restricted Directory). <br>🔍 **Flaw**: The system fails to correctly validate **Boards** during the import process.…

🏢 **Affected Vendor**: **Mattermost** (US-based open-source collaboration platform). <br>📦 **Product**: Mattermost. <br>📅 **Published**: Feb 24, 2025.…

💀 **Attacker Actions**: <br>1. **Read**: Full access to sensitive data (C:H). <br>2. **Write**: Modify or delete critical data (I:H). <br>3. **Destroy**: Take down the service (A:H).…

🔑 **Exploitation Threshold**: **LOW**. <br>✅ **Auth**: Requires **Low Privileges** (PR:L). <br>✅ **UI**: No User Interaction needed (UI:N). <br>✅ **Network**: Network exploitable (AV:N).…

💻 **Public Exploit**: **YES**. <br>🔗 **PoC Link**: [GitHub - numanturle/CVE-2025-25279](https://github.com/numanturle/CVE-2025-25279). <br>⚠️ **Status**: Proof of Concept is available.…

🔍 **Self-Check**: <br>1. Check if you use **Mattermost Boards**. <br>2. Look for **Import** functionality in your instance. <br>3. Scan for the specific CVE ID in your vulnerability management tools. <br>4.…

🛡️ **Official Fix**: **YES**. <br>📢 **Source**: [Mattermost Security Updates](https://mattermost.com/security-updates). <br>✅ **Action**: Update to the latest version immediately.…

🚧 **No Patch Workaround**: <br>1. **Disable Boards**: If possible, disable the Boards feature entirely. <br>2. **Restrict Access**: Limit who can import boards (though PR:L makes this tricky). <br>3.…

🔥 **Urgency**: **CRITICAL / IMMEDIATE**. <br>📈 **Priority**: **P0**. <br>💡 **Reason**: High CVSS score, low exploitation barrier, public PoC exists, and impact is total (Confidentiality, Integrity, Availability).…