← Vulnerability feed

Vulnerability record · CVE-2025-15561 · published 19 February 2026

CVE-2025-15561: Nestersoft worktime improper privilege management vulnerability

Nestersoft · Worktime

An attacker can exploit the update behavior of the WorkTime monitoring daemon to elevate privileges on the local system to NT Authority\SYSTEM. A malicious executable must be named  WTWatch.exe and dropped in the C:\ProgramData\wta\ClientExe directory, which is writable by "Everyone". The executable will then be run by the WorkTime monitoring daemon.

7.8 CVSS 3.1 High EPSS 0.11% · top 98.9% CWE-269 · Improper privilege management
7.8CVSS 3.1 base score
0.11%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

An attacker can exploit the update behavior of the WorkTime monitoring daemon to elevate privileges on the local system to NT Authority\SYSTEM. A malicious executable must be named  WTWatch.exe and dropped in the C:\ProgramData\wta\ClientExe directory, which is writable by "Everyone". The executable will then be run by the WorkTime monitoring daemon.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://r.sec-consult.com/worktime Third Party Advisory

Track CVE-2025-15561 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2025-15559Nestersoft worktime os command injection vulnerabilityAn unauthenticated attacker can inject OS commands when calling a server API endpoint in NesterSoft WorkTime. The server API call to generate and dow…EPSS 0.46%8.8CVE-2025-15560Nestersoft worktime sql injection vulnerabilityAn authenticated attacker with minimal permissions can exploit a SQL injection in the WorkTime server "widget" API endpoint to inject SQL queries. If…EPSS 0.26%6.1CVE-2025-15562Nestersoft worktime cross-site scripting vulnerabilityThe server API endpoint /report/internet/urls reflects received data into the HTML response without applying proper encoding or filtering. This allow…EPSS 0.16%5.3CVE-2025-15563Nestersoft worktime missing authorization vulnerabilityAny unauthenticated user can reset the WorkTime on-prem database configuration by sending a specific HTTP request to the WorkTime server. No authoriz…EPSS 0.27%9.9CVE-2026-84869ScreenConnect client allows unauthorized file transfer and execution in remote sessionsA flaw in the ConnectWise ScreenConnect client lets files be transferred and executed inside an active remote session without authorization or Host c…KEVEPSS 0.92%analysed9.8CVE-2026-46817Oracle E-Business Suite Payments missing authentication allows takeoverOracle Payments in Oracle E-Business Suite 12.2.3 through 12.2.15 contains an easily exploitable flaw in the File Transmission component. An unauthen…KEVEPSS 0.81%analysed7.8CVE-2026-21533Windows Remote Desktop improper privilege management allows local elevationWindows Remote Desktop contains an improper privilege management flaw (CWE-269) that lets an authorized attacker elevate privileges locally. It affec…KEVEPSS 4.1%analysed5.1CVE-2024-8068Citrix Session Recording privilege escalation to NetworkServiceCitrix Session Recording contains an improper privilege management flaw (CWE-269) that lets an authenticated attacker escalate to the NetworkService …KEVEPSS 3.5%analysed

Source: NIST National Vulnerability Database (record CVE-2025-15561), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.