CVE-2025-3716 is a medium severity vulnerability impacting ESET Protect, classified under CVSS version 4.0 with a score of 5.3. This vulnerability allows user enumeration via response timing, potentially exposing sensitive user data. The attack vector is classified as adjacent, which means it requires access to the local network where the ESET Protect instance is deployed.
With a low attack complexity, this vulnerability can be exploited without requiring specific privileges or user interaction. The potential impact on availability is low, but the ability to enumerate users poses a significant risk to organizations, as it could lead to further attacks.
Organizations should prioritize patching immediately to mitigate the risks associated with this vulnerability. Given the nature of user enumeration, attackers may leverage this vulnerability to gather information for future attacks.
Currently, the exploitation status is uncertain as the vulnerability is awaiting analysis. However, it is crucial for defenders to remain vigilant and ensure proper security measures are in place.
Vulnerability Details
The official description of CVE-2025-3716 states, 'User enumeration in ESET Protect (on-prem) via Response Timing.' This vulnerability falls under the CWE-204 classification, which refers to 'Observable response timing differences'.
The CVSS score of 5.3 reflects the medium severity of this issue, indicating that while it may not lead to critical impacts, it still requires attention. This vulnerability affects ESET Protect, although specific version information is currently not defined.
The vulnerability was published on March 30, 2026, and is currently classified as 'Awaiting Analysis'.
Technical Analysis
The root cause of this vulnerability lies in the way ESET Protect handles response timings. By observing the time taken for different responses, an attacker can determine whether certain user accounts exist, leading to user enumeration.
The attack vector is adjacent, meaning that an attacker must have access to the local network. Low attack complexity indicates that the method of exploitation does not require advanced skills or resources. There are no privileges required or user interactions necessary to exploit this vulnerability.
The confidentiality impact is rated as none, while the integrity impact is also none. However, the availability impact is considered low, as the vulnerability does not directly disrupt service but aids in information gathering.
Risk & Impact Analysis
The real-world deployment risk of CVE-2025-3716 is significant due to its ability to enable user enumeration. Attackers may use this information to carry out targeted attacks against the identified users, potentially leading to unauthorized access or other security incidents.
Organizations must understand that even medium severity vulnerabilities can serve as entry points for attackers. The blast radius can expand if vulnerable systems are not adequately protected, as attackers may leverage enumerated user information in subsequent attacks.
Given the CVSS score of 5.3 and the current status of the vulnerability, organizations should address this issue in their priority patch cycle. Staying ahead of potential exploitation is critical to maintaining a secure environment.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
As of now, specific version information for ESET Protect affected by CVE-2025-3716 is not defined. Organizations should assume that all versions are potentially vulnerable until further analysis is completed.
Mitigation & Remediation
To mitigate the risks associated with CVE-2025-3716, organizations should apply patches as they become available. In cases where immediate patching is not feasible, implementing network segmentation and monitoring can reduce exposure.
Additionally, organizations can enhance their security posture through regular security assessments, including penetration testing to identify any weaknesses in their systems.
Detection Guidance
Organizations should monitor logs for unusual activity related to user enumeration attempts. Behavioral anomalies, such as unexpected response times or patterns in access requests, can also indicate potential exploitation attempts.
Implementing network signatures that detect such patterns can enhance the ability to identify attempts to exploit this vulnerability.
AppSecure Threat Intelligence Insight
CVE-2025-3716 highlights the importance of robust security practices, particularly in environments where sensitive user data is handled. As user enumeration vulnerabilities can lead to significant security incidents, organizations must remain proactive in their defense strategies.
Patterns emerging from user enumeration vulnerabilities indicate a need for enhanced monitoring and response mechanisms. Security teams should review their policies and procedures to ensure they address these types of vulnerabilities effectively.
For comprehensive security assessments, organizations can refer to resources such as the vulnerability management program and the best practices outlined in the penetration testing methodology documentation.
Security teams must continue to educate themselves on the evolving threat landscape to effectively defend against vulnerabilities like CVE-2025-3716.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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