CVE-2025-10539 is a medium-severity vulnerability affecting the DeskTime Time Tracking App due to improper TLS certificate validation. This vulnerability allows attackers who can position themselves in the network path between the client and the DeskTime update servers to return a malicious executable in response to an update request. Consequently, attackers may achieve user-level remote code execution on the affected client.
The CVSS score for this vulnerability is 4.8, indicating a medium severity level. The attack vector is classified as NETWORK, with a high attack complexity. Importantly, no privileges are required, and user interaction is not necessary to exploit this vulnerability. The confidentiality and integrity impacts are low, while the availability impact is none.
Organizations should prioritize addressing this vulnerability as soon as updates are available. The risk to organizations includes potential unauthorized code execution, which could lead to further system compromises or data breaches.
Given the nature of this vulnerability and its exploitation potential, it is important for users to remain vigilant and ensure that they are using the latest version of the DeskTime Time Tracking App.
Vulnerability Details
The vulnerability arises from improper TLS certificate validation in the DeskTime Time Tracking App prior to version 1.3.674. Attackers may exploit this flaw if they can position themselves in the network path between the client and the DeskTime update servers.
The official CVE description states that this vulnerability allows attackers to return a malicious executable when an update request is made, enabling user-level remote code execution on the affected client.
The following CWE classifications are associated with this vulnerability: CWE-295 (Improper Certificate Validation), CWE-296 (Improper Verification of Cryptographic Signature), and CWE-494 (Download of Code Without Integrity Check).
Technical Analysis
The root cause of CVE-2025-10539 lies in the improper validation of TLS certificates during the update process. This weakness allows an attacker situated in the network path to intercept update requests and respond with a malicious payload.
The attack vector is classified as network-based, requiring high attack complexity. No privileges are required to exploit this vulnerability, and user interaction is not needed. The impact on confidentiality and integrity is low, while there is no impact on availability.
Risk & Impact Analysis
The risk to organizations includes unauthorized remote code execution, potentially leading to further system compromises. Given the low complexity of the attack and the lack of required privileges, organizations should be particularly cautious.
With a CVSS score of 4.8, this vulnerability is classified as medium severity. The urgency for remediation is moderate, and organizations should schedule patching as part of their priority patch cycle.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to vendor patch (1.3.674) are affected by this vulnerability. It is crucial for users to update to the latest version to mitigate risks.
Mitigation & Remediation
Organizations should monitor for updates from DeskTime and apply patches as soon as they are available. For users unable to immediately update, consider implementing network controls to limit exposure to potential attackers.
Additionally, organizations may enhance security by reviewing their TLS configurations and ensuring that all certificates are properly validated.
Penetration testing can also help identify similar weaknesses in other applications.
Detection Guidance
Organizations should monitor logs for any unusual update requests or network traffic patterns that may indicate an attempt to exploit this vulnerability.
Behavioral anomalies in the DeskTime application or unexpected executable downloads should also be tracked closely.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-10539 highlights the growing concerns around improper TLS validation in software applications, which can lead to severe security breaches.
As organizations increasingly rely on remote updates, ensuring the integrity of software distributions is paramount. This vulnerability serves as a reminder to implement robust security measures.
Security teams should take lessons from this incident to fortify their security postures and proactively address potential vulnerabilities in their applications.
Continuous penetration testing can provide valuable insights into the security landscape and assist in identifying areas for improvement.
A well-structured vulnerability management program can enhance the organization's ability to respond to emerging threats effectively.
API security testing should also be considered as part of the overall security strategy to safeguard against similar vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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