CISA Highlights Critical Roundcube Vulnerabilities Amid Active Exploitation
In February 2026, the U.S. Cybersecurity and Infrastructure Security Agency (CISA) added two critical vulnerabilities affecting Roundcube webmail software to its Known Exploited Vulnerabilities (KEV) catalog, citing active exploitation. The first, CVE-2025-49113, is a deserialization flaw allowing remote code execution by authenticated users due to improper validation of the '_from' parameter in 'upload.php'. The second, CVE-2025-68461, is a cross-site scripting vulnerability via the 'animate' tag in SVG documents. Both vulnerabilities have been exploited by threat actors, including nation-state groups like APT28 and Winter Vivern, to steal login credentials and spy on sensitive communications. ([thehackernews.com](https://thehackernews.com/2026/02/cisa-adds-two-actively-exploited.html?utm_source=openai)) The inclusion of these vulnerabilities in the KEV catalog underscores the persistent targeting of webmail platforms by sophisticated adversaries. Organizations using Roundcube are urged to apply the latest security patches promptly to mitigate potential risks. ([thehackernews.com](https://thehackernews.com/2026/02/cisa-adds-two-actively-exploited.html?utm_source=openai))
Kill Chain