A major cybersecurity firm says it has detected active exploitation of previously unknown software flaws in government networks across several Eastern European countries. The activity, the company said, suggests a coordinated campaign targeting public-sector systems that handle sensitive state operations.

The report has raised concern among regional officials and security experts about the scale of the intrusions and the possibility of state-linked actors behind them. Zero-day vulnerabilities are especially dangerous because they can be used before vendors release patches, leaving agencies exposed with little warning.

The firm did not publicly identify every affected government network or attribute the attacks to a specific country or group. Still, the discovery underscores the growing pressure on public institutions to harden defenses, improve threat monitoring, and accelerate patch management as cyber operations become more sophisticated.

Researchers say the incidents are a reminder that government infrastructure remains a prime target in geopolitical cyber conflicts, where espionage, disruption, and data theft can all carry wider risks for civilians and essential services.