Russian State-Supported APT LAUNDRY BEAR Exploits Zero-Day in Zimbra Webmail for Global Email Espionage
Russian state-supported cyber actors (LAUNDRY BEAR) have exploited a zero-day XSS vulnerability (CVE-2025-66376) in Zimbra Collaboration Suite since July 2025 to exfiltrate 90 days of email, GAL, and authentication data via a view-only phishing technique, requiring only that victims open a malicious email in a vulnerable web client. Read more