Overview
Cybersecurity threats are an ongoing concern for businesses worldwide, and the recent discovery of CVE-2025-2416, a critical vulnerability in Akinsoft LimonDesk, underscores this reality. This vulnerability, due to improper restriction of excessive authentication attempts, allows potential attackers to bypass the authentication process, leading to unauthorized system access. It is a severe issue that affects all users of Akinsoft LimonDesk, a widely used software, from version s1.02.14 before v1.02.17. This vulnerability matters because it poses a risk of system compromise or data leakage, possibly leading to significant financial loss and reputational damage for organizations.
Vulnerability Summary
CVE ID: CVE-2025-2416
Severity: Critical (8.6 CVSS Severity Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Akinsoft LimonDesk | s1.02.14 before v1.02.17
How the Exploit Works
The vulnerability stems from an improper restriction of excessive authentication attempts in Akinsoft LimonDesk, which allows an attacker to bypass the authentication process. An attacker can exploit this vulnerability by repeatedly attempting to authenticate with different credentials until successful, without being locked out or delayed by the system. This lack of restriction allows an attacker to potentially gain unauthorized access to the system, leading to potential system compromise or data leakage.
Conceptual Example Code
A conceptual example of how this vulnerability might be exploited is shown below:
POST /login HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "username": "admin", "password": "guess_password_here" }In this example, the attacker repeatedly sends POST requests to the login endpoint with different password guesses until a successful login response is received.
Mitigation Guidance
The best mitigation strategy is to apply the vendor’s patch. Akinsoft has released a patch for this vulnerability in version v1.02.17 of LimonDesk. Users are strongly advised to update their software to the latest version.
In addition to applying the vendor’s patch, users should also consider implementing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation measure. These systems can help detect and block excessive authentication attempts, thereby preventing potential exploitation of this vulnerability.
