Webmail Zero-Day Bug: Winter Vivern APT’s One-Click Exploit Unleashed
Winter Vivern Exploits Zero-Day Flaw in Roundcube Webmail Servers Background A low-profile threat group known as Winter Vivern has been secretly targeting governmental organizations and a think tank in Europe through a malicious email campaign. The group has been exploiting a zero-day flaw in Roundcube Webmail servers, a popular open-source webmail solution, to carry out…