ESET Research has been closely tracking the cyberespionage operations of Winter Vivern for more than a year and, during our routine monitoring, we found that the group began exploiting a zero-day XSS ...

New Cyberattack From Winter Vivern Exploits a Zero-Day Vulnerability in Roundcube Webmail Your email has been sent After reading the technical details about this zero-day that targeted governmental ...

Hackers are likely starting to exploit CVE-2025-49113, a critical vulnerability in the widely used Roundcube open-source webmail application that allows remote execution. The security issue has been ...

The threat associated with a critical decade-old remote code execution vulnerability in Roundcube webmail has increased sharply in recent days, with proof-of-concept (PoC) code for the bug becoming ...

ESET researchers have revealed that the Winter Vivern Russian hacking group has exploited a zero-day vulnerability in Roundcube Webmail, targeting various European government entities and think tanks.

A vulnerability in the Roundcube email server platform is being actively exploited, the US government warns, urging its bodies to apply the patch and secure their instances sooner, rather than later.