CVE-2025-10539: Due to improper TLS certificate validation in the DeskTime Time Tracking App before version 1.3.674, attackers

Q: How do I fix CVE-2025-10539?

desktime time tracking: upgrade to 1.3.674. Exact commands for each OS are on this page.

Q: Is CVE-2025-10539 being exploited?

CVE-2025-10539 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-10539 affect?

CVE-2025-10539 affects desktime time tracking. Severity is medium (CVSS 4.8). 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 executa

Q: How urgent is CVE-2025-10539?

Priority 29/100. Public exploit reference; Remotely exploitable, no login, no user action

This week

MEDIUM 4.8REMOTEUPGRADE

CVE-2025-10539 is a medium-severity flaw (CVSS 4.8) affecting desktime time tracking. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 93%)
CISA exploited list	No
Weakness	CWE-295, CWE-296, CWE-494
Published	2026-04-28
Last modified	2026-10-07

Publisher (CNA): SEC Consult Vulnerability Lab · Vendor: draugiemgroup

Last updated 2026-10-07 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-28 09:16 UTCPublished CVE record published
2026-10-07 09:10 UTCUpdated Record last modified

draugiemgroup desktime time tracking UPGRADE

Affected: < 1.3.674

Fixed in: 1.3.674

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy desktime-time-tracking || rpm -q desktime-time-tracking || desktime-time-tracking --version

2. UPGRADE to 1.3.674 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade desktime-time-tracking

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade desktime-time-tracking

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-10539?

desktime time tracking: upgrade to 1.3.674. Exact commands for each OS are on this page.

Is CVE-2025-10539 being exploited?

CVE-2025-10539 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-10539 affect?

CVE-2025-10539 affects desktime time tracking. Severity is medium (CVSS 4.8). 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 executa

How urgent is CVE-2025-10539?

Priority 29/100. Public exploit reference; Remotely exploitable, no login, no user action

References

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