Váhostav

Váhostav was compromised in a ransomware attack attributed to dragonforce in December 2025. The organization, operating in the Construction sector in SK, was added to the group's data leak site as part of an extortion campaign.

dragonforce operates as a financially motivated ransomware-as-a-service (RaaS) operation, exfiltrating sensitive data and threatening public disclosure to pressure victims into paying ransom demands.

VÁHOSTAV is one of the leading construction companies in Slovakia, specializing in complex and technically demanding projects across various sectors including transportation, engineering, and industrial construction. The company operates both domestically and internationally, utilizing advanced technologies through its own production facilities and subsidiaries. VÁHOSTAV is committed to sustainable development principles, integrating quality, safety, and environmental management systems certified under ISO standards. Their current projects include modernization of railway corridors and infrastructure improvements, reflecting their dedication to minimizing waste and maximizing resource efficiency.

Intelligence correlations link this incident to 1 vulnerability(ies) including CVE-2025-5777, which may have been leveraged as initial access vectors or for lateral movement.