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 ...
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 ...
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 ...
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