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.

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 ...

Winter Vivern, believed to be a Belarus-aligned hacker, attacked European government entities and a think tank starting on Oct. 11, according to an Ars Technica report Wednesday. ESET Research ...

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 ...

The Winter Vivern Russian hacking group has been exploiting a Roundcube Webmail zero-day in attacks targeting European government entities and think tanks since at least October 11. The Roundcube ...

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 ...

Low-profile threat group Winter Vivern has been exploiting a zero-day flaw in Roundcube Webmail servers with a malicious email campaign targeting governmental organizations and a think tank in Europe ...