Vulnerability · Published Apr 28, 2026 · Assigned by SEC-VLab
CVE-2025-10539Improper TLS Certificate Validation RCE via Malicious Update in DeskTime Time Tracking App
Medium 4.8
In plain English
A medium-severity improper certificate validation in DeskTime Time Tracking App from DeskTime. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).
Official description
Due to improper TLS certificate validation in the DeskTime Time Tracking App before version 1.3.674, attackers who can position themselves in the network path between the client and the DeskTime update servers can return a malicious executable in response to an update request. This allows the attacker to achieve user-level remote code execution on the affected client.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| DeskTime | DeskTime Time Tracking App | 0 – before 1.3.674 |
Weakness: CWE-295, CWE-296, CWE-494 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
References
- https://r.sec-consult.com/desktime third-party-advisory
- https://desktime.com/download patch
- https://sec-consult.com/vulnerability-lab/advisory/missing-tls-certificate-validation-leading-to-rce-in-desktime-time-tracking-app/ exploit
- http://seclists.org/fulldisclosure/2026/Apr/20
- http://seclists.org/fulldisclosure/2026/Apr/21