Overview
The CVE-2025-59684 is a critical security vulnerability that affects DigiSign DigiSigner ONE version 1.0.4.60. It was discovered that this software version has a loophole that allows DLL Hijacking. This vulnerability is crucial as it can lead to potential system compromise or data leakage. Users and organizations employing DigiSign DigiSigner ONE 1.0.4.60 in their operations need to be aware of the risks associated with this vulnerability and handle it with the urgency it deserves.
Vulnerability Summary
CVE ID: CVE-2025-59684
Severity: Critical (CVSS score 8.8)
Attack Vector: Local
Privileges Required: High
User Interaction: Required
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
DigiSign DigiSigner ONE | 1.0.4.60
How the Exploit Works
The vulnerability stems from DigiSign DigiSigner ONE’s insecure loading of Dynamic-Link Libraries (DLLs). An attacker can exploit this vulnerability by tricking a user into opening a file from a directory that also contains a malicious DLL. Once the user opens the file, the software will load the malicious DLL, allowing the attacker to execute arbitrary code, compromising the user’s system or possibly leading to data leakage.
Conceptual Example Code
A conceptual example of exploiting this vulnerability could involve an attacker placing a malicious DLL in the same directory as a file that the victim is likely to open with DigiSign DigiSigner ONE. The code within the malicious DLL could look something like this:
using System;
namespace MyMaliciousDll
{
public class Exploit
{
public static void Main()
{
// Arbitrary code to be executed
Console.WriteLine("System compromised!");
}
}
}When the user opens a file from this directory with DigiSign DigiSigner ONE, the software will inadvertently load the malicious DLL, and the attacker’s code will be executed.
To prevent this type of attack, users are advised to apply the vendor patch as soon as possible. In the meantime, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation strategy.
