CVE-2025-15559

Unauthenticated OS Command Injection in NesterSoft WorkTime

CVSS 9.8 CRITICALEPSS 0.4%CWE-78

Vexday Risk Score

28Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 9.8EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

19 fev 2026Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

An unauthenticated attacker can inject OS commands when calling a server API endpoint in NesterSoft WorkTime. The server API call to generate and download the WorkTime client from the WorkTime server is vulnerable in the “guid” parameter. This allows an attacker to execute arbitrary commands on the WorkTime server as NT Authority\SYSTEM with the highest privileges. Attackers are able to access or manipulate sensitive data and take over the whole server.

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

Produtos afetados

NesterSoft Inc. · WorkTime (on-prem/cloud)

Referências

https://r.sec-consult.com/worktime