CVE-2025-10539 Improper TLS Certificate Validation RCE via Malicious Update in DeskTime Time Tracking App
Attackers can achieve remote code execution by intercepting update requests due to improper TLS certificate validation in the DeskTime desktop application.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-10539?
CVE-2025-10539 is a medium-severity vulnerability in DeskTime Time Tracking App, published on 28 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Which versions are affected by CVE-2025-10539?
It affects 1 product.
Products include Draugiemgroup Desktime Time Tracking.
How do I fix CVE-2025-10539?
No fix has been published for CVE-2025-10539 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-10539 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-10539 exists.
Sources
Also known as GHSA-m272-rh3v-6hfm.